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Manufacturing & Marine · course plan
⚠ Pending professional review

This course plan, its lessons and its assessments has not yet been verified by a licensed engineer or certified journey-level tradesperson or by a certification or approval body. It is a study draft and may contain errors. Do not use it as instructions for work on a job site or on live equipment. Always follow your instructor, your supervising professional, and current official references and regulations.

VoTechWorks program approval and accreditation are still in progress. Credentials are issued only by the certifying bodies named in each program, after their own exams.

Fiberglass / Composites (boatbuilding)

9 courses · 900 clock hours · 6 mo full-time. Grading is competency-based: each course requires the written exam, a competent skills demonstration with zero safety faults, a signed log, and a passed safety audit; percentage weights only rank performance above the competency floor.

$9,920 COMPLIMENTARYprogram tuition
9courses
54lessons
900hours
31assessments
Development progressPlanCourses, lessons and assessments written for this tradeLessons54 of 54 lesson pages writtenPractice430 practice questionsResources117 reference entries (study list)Review0 lesson pages reviewed by a licensed professional
Study now: 54 lesson pages are open (lesson titles below are links).
MFG-COMP18-01 Universal core

Universal Core: Safety, Math, Communication & Career — Fiberglass & Composites Boatbuilding

148 hr · $1,185 COMPLIMENTARY

This foundational course equips adult learners with the safety knowledge, trade mathematics, technical literacy, digital skills, and career-readiness habits required before touching any composite materials or equipment. Every topic is contextualized to fiberglass boatbuilding and the ABYC and ACMA CCT credential domains so that later technical courses build on a solid, verified base.

Outcomes
Course text

This foundational course equips adult learners with the safety knowledge, trade mathematics, technical literacy, digital skills, and career-readiness habits required before touching any composite materials or equipment. Every topic is contextualized to fiberglass boatbuilding and the ABYC and ACMA CCT credential domains so that later technical courses build on a solid, verified base.

How the course runs. 7 blocks: Hazard Recognition and OSHA 10 — Marine Composites Shop; PPE Selection, Respiratory Protection, and First Aid/CPR; Trade Math — Measurement, Ratios, and Resin Calculations; Reading Technical Documents — SDS, ABYC Standards, and Laminate Schedules; Composites Industry Vocabulary and Technical Communication; Digital Tools for the Composites Shop and Job Search; Career Planning — Credentials, Pathways, and Professional Identity.

What competent looks like. Complete OSHA 10-Hour General Industry training and demonstrate correct hazard-identification and lockout/tagout procedures in a shop walk-through. Perform first aid and CPR to the standard required for certification, including response to chemical splash, respiratory distress from styrene or acetone exposure, and laceration from fiberglass. Apply trade math — fractions, ratios, unit conversion, geometric area and volume, and weight-to-volume resin calculations — accurately on boatbuilding problems with no more than 2% error. Read and interpret technical documents including ABYC standards summaries, safety data sheets (SDS), laminate schedules, and work orders using correct composites terminology. Use basic digital tools — spreadsheets for mix-ratio tracking, email for workplace communication, and job-search platforms — to support shop and career tasks. Construct a personal career plan that maps the ABYC Composite Boat Builder and ACMA CCT credential requirements to a realistic pathway toward employment in the marine composites industry.

Lessons · 7 blocks
#LessonHrTypeObjectiveActivitiesMaterialsCheck
1Hazard Recognition and OSHA 10 — Marine Composites Shop30theoryStudents will identify the primary physical, chemical, and ergonomic hazards present in a fiberglass boatbuilding shop and correctly apply OSHA General Industry hazard-control principles to each.
  1. Complete all ten modules of the OSHA 10-Hour General Industry course (OSHA OTI online or instructor-led), documenting module completion with the provided sign-in sheets.
  2. Conduct a guided shop walk-through using a printed hazard-identification checklist: locate and label at least 15 hazard sources including resin storage, solvent dispensing stations, spray areas, grinding stations, and overhead crane controls.
  3. Complete a written lockout/tagout (LOTO) scenario exercise in which students fill out an energy-isolation permit for a laminating table power tool, following 29 CFR 1910.147 procedure steps.
OSHA OTI OSHA 10 General Industry course materials; 29 CFR 1910.147 reference card; shop hazard-identification checklist (instructor-prepared); blank LOTO permit forms; SDS binder for polyester resin, vinyl ester resin, epoxy, acetone, MEKP, styrene, gel coat.OSHA 10 card issued upon course completion; shop walk-through checklist must identify ≥ 15 of 20 targeted hazards (75% pass); LOTO permit must have all required fields correct with zero critical steps missing.
2PPE Selection, Respiratory Protection, and First Aid/CPR24demoStudents will select appropriate PPE for each composites task, demonstrate correct respirator fit-check and donning, and perform adult CPR and first aid to the standard required for certification.
  1. Hands-on PPE station rotation: students match PPE items (nitrile gloves, chemical splash goggles, face shields, half-face air-purifying respirator with organic-vapor/P100 cartridges, Tyvek suits) to laminating, grinding, spraying, and solvent-handling task cards, justifying each choice by citing the relevant SDS section.
  2. Instructor-demonstrated respirator fit-check followed by individual qualitative fit-test (saccharin or Bitrex protocol per OSHA 29 CFR 1910.134) with students documenting results on fit-test records.
  3. American Heart Association Heartsaver First Aid CPR AED (or equivalent accredited course): skills stations covering adult CPR compression and rescue breathing, AED use, chemical splash eye-wash procedure, and wound care for glass-fiber lacerations — leading to student certification cards.
Assorted PPE samples (gloves, goggles, face shields, half-face respirators, Tyvek suits, hearing protection); qualitative fit-test kit; AHA Heartsaver student workbooks and manikins; AED trainer; eye-wash station; first-aid kit; SDS binder.Valid First Aid/CPR certification card upon completion; PPE task-matching exercise ≥ 80% correct; respirator fit-test logged with passing result; debrief Q&A — instructor verifies student can state minimum cartridge-change frequency and eye-wash flush duration without prompting.
3Trade Math — Measurement, Ratios, and Resin Calculations28labStudents will accurately perform unit conversion, area and volume calculations, and resin mix-ratio and catalyst percentage calculations relevant to laminate schedule preparation, with no more than 2% error on a timed problem set.
  1. Measurement drill using calipers, tape measures, and a digital scale: students measure thickness of five different fiberglass fabric samples (woven roving, chopped strand mat, biaxial cloth, core material, and cured laminate panel), convert readings between inches, millimeters, and fractions, and record results in a formatted data table.
  2. Area and volume worksheet set: students calculate wetted surface area of simplified hull sections (flat panels, cylinders, truncated cones) and determine total resin volume required at given fiber-to-resin ratios, then convert volume to weight using specific-gravity values from the SDS — all worked problems checked against an answer key in pairs.
  3. Resin-mix lab: students weigh out three small practice batches of polyester resin using specified catalyst percentages (instructor-set, within safe MEKP use range per manufacturer data sheet), record actual versus target weights, calculate percent error for each batch, and identify whether the batch is within the acceptable tolerance window.
Digital calipers; tape measures; platform scale (0.1 g resolution); fiberglass fabric samples; polyester resin and MEKP (small quantities for practice batches); mixing cups and stir sticks; scientific calculators; printed worksheet packet; answer key; SDS for resin and catalyst.Timed 20-question math quiz covering all skill areas — pass mark 80%; resin-mix lab: all three batches within ±2% of target catalyst weight; measurement data table reviewed by instructor for correct unit conversions.
4Reading Technical Documents — SDS, ABYC Standards, and Laminate Schedules22theoryStudents will locate specific safety, material, and construction information within SDS documents, ABYC standards summaries, and a marine laminate schedule, demonstrating comprehension by answering targeted questions with 80% accuracy.
  1. SDS scavenger hunt: each student receives SDS documents for polyester resin, epoxy, and acetone and completes a structured question sheet covering all 16 GHS sections — including flash point, exposure limits, first-aid measures, and proper disposal — answers checked against a key.
  2. ABYC standards reading exercise: instructor distributes plain-language summaries of relevant ABYC standards (e.g., hull construction and flotation standards applicable to composite boat building) and students annotate the text to identify requirements that affect layup, material selection, and flotation foam placement, then discuss findings in small groups.
  3. Laminate schedule interpretation: students receive a sample single-skin laminate schedule for a small fiberglass dinghy (instructor-prepared, using realistic fabric weights and ply counts) and answer questions identifying fabric type, ply sequence, resin type, and estimated total laminate thickness, then compare answers with a partner before whole-class debrief.
SDS documents (polyester resin, epoxy, acetone — current manufacturer versions); printed ABYC standards summaries (instructor-curated excerpts, copyright-compliant); sample laminate schedule handout; SDS question sheet; annotation pens; whiteboard for group debrief.SDS question sheet ≥ 80% correct; laminate schedule questions ≥ 80% correct; participation in standards discussion confirmed by instructor observation checklist.
5Composites Industry Vocabulary and Technical Communication14theoryStudents will correctly use standard composites and marine industry terminology in written and spoken communication, including in a work-order response and a verbal toolbox-talk scenario.
  1. Vocabulary card sort: students match 40 term cards (e.g., woven roving, biaxial, gel time, exotherm, pot life, peel ply, wet layup, vacuum infusion, osmotic blistering, laminate schedule, freeboard, transom, hull-to-deck joint) to definition cards, then write a sentence using each term in a trade context.
  2. Work-order reading and response exercise: students read a written repair work order describing a hull blister repair and write a short response memo to a shop supervisor explaining the steps they intend to take, the materials they will requisition, and any safety precautions — graded with a rubric for terminology accuracy, clarity, and completeness.
  3. Toolbox-talk delivery: each student prepares and delivers a 3-minute verbal safety briefing on one assigned hazard (e.g., MEKP oxidizer handling, styrene exposure during open molding, or silica dust from grinding) to the class, using correct terminology and referencing the SDS — peers score using a provided observation form.
Vocabulary term and definition card sets (instructor-prepared); sample work order (instructor-prepared); memo rubric; toolbox-talk topic cards; peer observation forms; whiteboard; SDS binder.Vocabulary card sort ≥ 80% correct; work-order memo scored ≥ 80% on rubric (terminology, clarity, completeness); toolbox talk scored ≥ 80% on peer/instructor observation form for accuracy and correct PPE/hazard references.
6Digital Tools for the Composites Shop and Job Search14practiceStudents will use spreadsheet software to build a resin mix-ratio tracking log and use professional digital communication and job-search platforms to locate and respond to a real entry-level marine composites job posting.
  1. Spreadsheet lab: students build a resin-tracking spreadsheet from scratch that accepts batch number, resin type, target weight, catalyst percentage, and actual weights, then auto-calculates percent error and flags out-of-tolerance batches with conditional formatting — instructor evaluates the file against a specification checklist.
  2. Email drafting exercise: students compose a professional email to a fictional shop supervisor requesting a material order, then a follow-up email responding to a fictional employer's interview invitation — both reviewed against a professional-communication rubric emphasizing correct greeting, clear body, and appropriate sign-off.
  3. Job-search activity: students use publicly available job boards and the ABYC and ACMA career resource pages to find three real or realistic entry-level composites or boatbuilding job postings, copy the key requirements into a comparison table, and identify which credential (ABYC Composite Boat Builder or ACMA CCT) is referenced or relevant to each posting — results shared in class discussion.
Computers or tablets with spreadsheet software (Google Sheets or Microsoft Excel); internet access; email accounts; job-board websites; ABYC and ACMA website access; email rubric; spreadsheet specification checklist.Spreadsheet file meets all checklist items (correct formulas, conditional formatting triggers accurately) — pass = all required functions present and operating; email drafts score ≥ 80% on rubric; job-search table submitted with three postings and credential mapping completed.
7Career Planning — Credentials, Pathways, and Professional Identity16fieldStudents will construct a written personal career plan that accurately describes the ABYC Composite Boat Builder and ACMA CCT credential requirements and maps them to a realistic 12-month post-graduation employment pathway.
  1. Guest speaker or virtual panel: a credentialed composites technician and/or an ABYC-affiliated marine employer speaks to the class about career paths, wage progression, and how the ABYC and ACMA credentials affected their hiring or advancement — students submit three written takeaways and two questions asked or prepared.
  2. Credential mapping exercise: using current ABYC and ACMA published information, students create a two-column comparison chart listing the exam domains, eligibility requirements, and maintenance requirements for both the ABYC Composite Boat Builder credential and the ACMA CCT credential, then annotate which program courses address each domain.
  3. Personal career plan document: each student produces a one-to-two-page written plan identifying their target job title and employer type, the credential(s) they intend to earn, the program courses that prepare them for each exam domain, their externship goal, and a 12-month post-graduation action timeline — submitted for instructor written feedback.
Current ABYC Composite Boat Builder and ACMA CCT credential information (from abycinc.org and acmanet.org, accessed directly); guest speaker or video-conferencing platform; credential comparison chart template; career plan rubric; word-processing software.Career plan scored with rubric: pass = plan accurately describes both credentials, maps ≥ 4 program courses to credential exam domains, includes a realistic timeline — minimum score 80%; credential comparison chart reviewed by instructor for factual accuracy with zero critical errors (e.g., wrong eligibility requirement).
Assessments
AssessmentTypeWeightPass standardMethod & rubric
OSHA 10 & Safety Knowledge ExamWritten exam25%70% or higher on all sections; OSHA 10 card must be earned to pass this assessment regardless of written score.A 50-question written exam covering OSHA General Industry hazard recognition, hierarchy of controls, lockout/tagout procedures, PPE selection for composites tasks, SDS interpretation, and first-aid response to chemical and physical injuries typical in a fiberglass shop. Questions are drawn from Lessons 1 and 2 and are formatted to mirror the question style used in ABYC and ACMA exam domains on safety.
Accuracy · Safety · Communication · Professionalism
Trade Math and Technical Reading ExamWritten exam25%80% overall; no individual section (math or reading) below 75%.A 40-question closed-book exam combining timed trade-math problems (unit conversion, area/volume, resin ratio calculations) and technical-reading comprehension questions requiring students to extract specific information from a provided SDS excerpt and a sample laminate schedule. This assessment directly maps to the quantitative and documentation competency domains tested on the ACMA CCT exam.
Accuracy · Safety · Communication · Professionalism
Digital Portfolio — Spreadsheet, Professional Communication, and Career PlanProject25%Each of the three components must score ≥ 80% on its respective rubric; a failing component must be revised and resubmitted within one week.Students submit their completed resin-tracking spreadsheet, two professional emails, and their personal career plan as a single digital portfolio package. The instructor evaluates each item against the rubrics introduced during Lessons 6 and 7, with particular attention to formula accuracy, professional tone, and factual correctness of credential information — skills that support workplace communication competencies addressed in the ACMA CCT exam framework.
Accuracy · Safety · Communication · Professionalism
Safety and Trade Knowledge Oral DefenseOral / panel25%Student must answer at least 4 of 5 questions correctly and demonstrate PPE donning without prompting to pass; a single re-attempt is permitted within one week.A 15-minute one-on-one oral session in which the instructor poses five scenario-based questions drawn randomly from all lesson areas (e.g., describe the LOTO procedure for a specific tool, identify the error in a given resin-batch calculation, explain what an SDS flash-point value means for storage). The student also physically dons and doffs a half-face respirator and chemical splash goggles while narrating their process, demonstrating the hands-on safety competency that underpins both the ABYC and ACMA credential practical expectations.
Accuracy · Safety · Communication · Professionalism
MFG-COMP18-02 Trade course

Mold Making for Fiberglass and Composite Boatbuilding

88 hr · $1,320 COMPLIMENTARY

Students learn to build, maintain, and release production-quality fiberglass molds from plug to finished tool, covering plug preparation, tooling gelcoat and laminate schedules, release systems, and mold quality inspection. Lessons are grounded in ABYC and ACMA standards for tooling materials, dimensional accuracy, and surface finish. Successful completion prepares students to evaluate mold condition and execute mold-making sequences used in production boatbuilding shops.

Outcomes
Course text

Students learn to build, maintain, and release production-quality fiberglass molds from plug to finished tool, covering plug preparation, tooling gelcoat and laminate schedules, release systems, and mold quality inspection. Lessons are grounded in ABYC and ACMA standards for tooling materials, dimensional accuracy, and surface finish. Successful completion prepares students to evaluate mold condition and execute mold-making sequences used in production boatbuilding shops.

How the course runs. 7 blocks: Mold Theory, Tooling Concepts, and Safety for Mold Making; Plug Design, Materials Selection, and Dimensional Layout; Plug Surface Preparation: Filling, Fairing, and Final Finish; Release Systems: Sealing, Waxing, and Semi-Permanent Release Agents; Tooling Gelcoat and Skin Coat Application; Build-Up Laminate, Flanges, and Stiffener Integration; Mold Release, Inspection, Repair, and Maintenance.

What competent looks like. Select appropriate plug materials and prepare a plug surface to a production-ready finish verified by gloss and profile measurements. Apply a multi-coat release system and tooling gelcoat to a plug following manufacturer specifications and ACMA CCT tooling guidelines. Laminate a female mold using a tooling laminate schedule that meets minimum thickness and fiber-volume requirements for dimensional stability. Perform mold release, inspect the finished mold for defects such as porosity, print-through, and warpage, and document findings on a mold inspection form. Safely handle, store, and dispose of tooling resins, styrene-containing materials, and solvents in compliance with OSHA Hazard Communication (HazCom) standards and applicable SDS requirements. Demonstrate mold maintenance procedures including waxing, buffing, and minor surface repair to sustain mold life and part quality.

Lessons · 7 blocks
#LessonHrTypeObjectiveActivitiesMaterialsCheck
1Mold Theory, Tooling Concepts, and Safety for Mold Making10theoryStudents will explain the purpose and anatomy of a production mold, identify tooling materials, and correctly interpret Safety Data Sheets for tooling gelcoat, tooling resin, and release agents.
  1. Read and annotate SDS documents for tooling gelcoat, MEKP catalyst, and a semi-permanent release agent; complete a written SDS scavenger-hunt worksheet identifying flash point, required PPE, and emergency procedures for each product.
  2. Label a cross-sectional diagram of a female mold identifying the plug, release layer, tooling gelcoat layer, skin coat, build-up laminate, and stiffening structure; discuss why each layer exists.
  3. Small-group case study: examine photographs of three mold failures (warpage, surface porosity, premature release bond) and propose the likely cause and prevention for each using the ABYC Composite Boat Builder study guide.
ABYC Composite Boat Builder reference materials, ACMA CCT Technician Study Guide, tooling resin and gelcoat SDS packets, mold cross-section diagram handout, dry-erase board, PPE (nitrile gloves, safety glasses, P100/OV respirator for any live product demonstrations)Students score 80% or higher on a 20-question written quiz covering mold anatomy, material identification, and SDS interpretation; each student must correctly identify required PPE for tooling gelcoat application before entering any subsequent lab.
2Plug Design, Materials Selection, and Dimensional Layout12demoStudents will read a simple part drawing, calculate plug dimensions including draft angle and flange allowances, and select appropriate plug-building materials for a given part geometry.
  1. Instructor demonstrates how to read a 2D part drawing of a small hull section, identify parting lines, and calculate required draft angles using a bevel gauge and protractor; students repeat the layout on their own drawing using a scale rule.
  2. Students examine sample plug materials (MDF, tooling board, foam, body filler, high-build primer) and complete a material-selection matrix comparing cost, machinability, moisture sensitivity, and surface hardness; justify selections in writing.
  3. Working in pairs, students mark up a full-scale foam-and-MDF plug blank with parting-line tape and flange boundary lines using measurements taken from the part drawing, checking squareness with a framing square and verifying symmetry with a flexible tape.
Part drawing (hull section, instructor-supplied), scale rule, bevel gauge, protractor, framing square, flexible tape measure, MDF offcuts, tooling board sample, foam sample, body filler sample, parting-line tape, dry-erase marker, PPE (safety glasses, dust mask for MDF cutting)Instructor verifies that each student's flange layout is within 1/8 inch of the drawing dimension and that draft-angle calculations are correct; any error greater than one degree in draft angle requires rework before proceeding.
3Plug Surface Preparation: Filling, Fairing, and Final Finish14labStudents will fill, fair, and sand a plug surface to a high-gloss finish with no visible low spots greater than 0.020 inches as measured with a metal straightedge.
  1. Students apply automotive body filler or tooling-grade high-build primer to an MDF panel plug blank, blocking it flat with a longboard sander progressing through 80, 120, 220, 320, 400, and 600 grit wet/dry abrasive; instructor demonstrates feathering technique before students begin.
  2. Students apply and sand a tooling primer sealer coat, then wet-sand with 800 and 1200 grit followed by machine buffing with a rotary polisher and cutting compound to achieve a measured gloss level; gloss is checked with a pencil reflectivity test or instructor gloss meter.
  3. Students use a metal straightedge and feeler gauge to check for high and low spots across the plug surface at a grid of 6-inch intervals, mark defects with chalk, and re-work any area that fails; complete a plug inspection checklist documenting each station.
MDF panel plug blanks, automotive body filler, polyester or epoxy high-build primer, wet/dry sandpaper (80–1200 grit), longboard sander, random-orbit sander, rotary polisher, cutting compound, metal straightedge, 0.020-inch feeler gauge, chalk, plug inspection checklist, PPE (P100/OV respirator, nitrile gloves, safety glasses, Tyvek suit)Plug surface passes instructor inspection: zero low spots greater than 0.020 inches on the straightedge-and-feeler-gauge check, visible gloss with clear reflection of a fluorescent tube; students who do not pass re-sand and recheck within the same lab session.
4Release Systems: Sealing, Waxing, and Semi-Permanent Release Agents10demoStudents will apply a complete multi-step release system to a prepared plug surface, demonstrating correct number of coats, cure times, and buffing technique for both paste wax and semi-permanent release agents.
  1. Instructor demonstrates the full release sequence for a paste-wax system (minimum four coats with full cure and buff between coats) and a semi-permanent PVA or chemical release agent system on identical test panels; students observe and record coat-by-coat timing and visual cues in a lab notebook.
  2. Each student applies a four-coat paste-wax release system to a prepared test panel, timing each coat, buffing to a haze-free finish, and recording actual elapsed times versus manufacturer recommendations in their lab log.
  3. Students apply one coat of PVA mold release (if used) over wax by spray or brush on a second test panel, allow to dry to a uniform film without bubbles or missed spots, then mark the panel and store it for use in the next lesson; discuss consequences of release failure using an industry photo example.
Prepared MDF test panels (finished to gloss from Lesson 3), paste mold release wax (carnauba-based, marine tooling grade), semi-permanent release agent (manufacturer-recommended product), PVA mold release (optional), clean cotton cloths, soft buffing pads, spray bottle, lab notebook, timer, PPE (nitrile gloves, safety glasses, ventilation)Instructor wipes a 2-inch patch of each student's waxed panel with a dark cloth; no wax transfer on the cloth after the final buff indicates adequate cure; PVA film (if applied) is visually checked for complete, pinhole-free coverage — any missed spot or bubble requires the student to re-apply that area.
5Tooling Gelcoat and Skin Coat Application16labStudents will catalyze and spray or brush tooling gelcoat to a uniform 20–25 mil wet-film thickness and apply a skin coat of tooling resin and 1.5 oz chopped-strand mat within the gelcoat's green-cure window.
  1. Instructor demonstrates MEKP catalyst ratio calculation (following manufacturer guidelines, typically within 1.0–2.0% by weight depending on temperature) and use of a digital gram scale; students calculate and weigh catalyst for a 200-gram batch, then mix and apply tooling gelcoat to a test panel using a brush, checking wet-film thickness with a wet-film gauge.
  2. Students spray tooling gelcoat on their released plug panels using an HVLP or conventional spray gun adjusted for recommended fan and fluid settings; each student applies two passes to build thickness, reads wet-film gauge at five points across the panel, and records readings in the lab log; instructor flags any panel below 18 mil or above 30 mil for corrective action.
  3. Within the manufacturer-specified green-cure window (tacky but not fully cured), students wet-out a layer of 1.5 oz chopped-strand mat with tooling resin, lay it onto the gelcoat surface, and consolidate with a stipple roller, eliminating air bubbles; instructor checks for voids with a tap test and marks any delaminated zones.
Tooling gelcoat (pigmented, tooling grade), MEKP catalyst, tooling laminating resin, 1.5 oz chopped-strand mat, digital gram scale, wet-film thickness gauge, HVLP or conventional spray gun, air compressor, mixing cups and sticks, stipple roller, chip brushes, acetone (for cleanup), disposable mixing containers, lab log, PPE (full-face respirator with OV/P100 cartridges, nitrile gloves, Tyvek suit, safety glasses)Wet-film gauge readings at five points must average 20–25 mil with no single point below 18 mil; skin coat is checked by instructor tap test for voids — zero unbonded zones permitted; students with failing panels must identify root cause in writing before re-spraying.
6Build-Up Laminate, Flanges, and Stiffener Integration14labStudents will complete a mold laminate schedule by applying build-up plies and perimeter flanges to achieve a minimum cured laminate thickness specified on the schedule, and bond or integrate stiffening structure.
  1. Students follow an instructor-provided tooling laminate schedule (e.g., skin coat + 3 layers 1.5 oz CSM + 2 layers woven roving at 24 oz) to build laminate thickness on their mold panels, mixing resin and catalyst for each batch on a gram scale, wetting out fabric, and rolling out air with a segmented consolidation roller; they record resin-to-reinforcement ratio for each ply in the lab log.
  2. Students cut and lay flanges around the perimeter of the mold panel using the same laminate schedule, extending at least 2 inches beyond the part boundary to provide a clamping and parting surface; flanges are checked for uniform thickness with calipers at four corners.
  3. After cure, students bond 1-inch square tubular fiberglass or plywood hat-section stiffeners to the mold back using a secondary bond (wet-laminate or adhesive as specified), ensuring stiffeners are parallel and square with a framing square; the completed mold back is photographed and logged.
Tooling laminate schedule (instructor-issued), 1.5 oz chopped-strand mat, 24 oz woven roving, tooling resin, MEKP, gram scale, segmented steel roller, mixing containers, calipers (0–6 inch), framing square, fiberglass or plywood stiffener stock, secondary bond adhesive or wet-laminate materials, scissors, marking pen, lab log, PPE (full-face respirator OV/P100, nitrile gloves, Tyvek, safety glasses)Cured laminate thickness is measured with calipers at six points; all readings must meet or exceed the scheduled minimum (typically 3/8 inch for a demonstration mold of this size); flange width is verified at 2 inches minimum at all four corners; any point below minimum requires an additional ply before sign-off.
7Mold Release, Inspection, Repair, and Maintenance12practiceStudents will demold a cured mold from its plug without damage, perform a full mold inspection using a standardized checklist, repair identified surface defects, and execute a first-production wax maintenance cycle.
  1. Students use wooden wedges and mold-release tabs (never metal pry tools against the gelcoat) to separate their mold from the plug, recording the force required and any areas of resistance in the lab log; any stuck zones are addressed with additional wooden wedge placement under instructor guidance before the mold is fully released.
  2. Students complete a standardized mold inspection form evaluating gelcoat color and gloss, surface porosity, print-through, warpage (checked with a 12-inch straightedge), flange squareness, and stiffener adhesion; defects are categorized as cosmetic or structural, and students write a one-paragraph corrective-action plan for each structural defect found.
  3. Students wet-sand and buff minor surface porosity or scratches on the mold cavity using 400, 600, 800, and 1200 grit wet/dry paper followed by cutting compound and polishing compound, then apply a four-coat maintenance wax cycle; instructor measures final gloss and compares it to a gloss standard panel.
Cured mold panels from Lesson 6, wooden wedges, mold inspection checklist, 12-inch metal straightedge, feeler gauge, calipers, wet/dry sandpaper (400–1200 grit), cutting compound, polishing compound, rotary polisher, paste mold release wax, cotton cloths, buffing pads, lab log, camera or phone for documentation, PPE (safety glasses, nitrile gloves, dust mask for sanding, OV respirator for polishing compounds)Mold inspection form must be fully completed with no blank fields; at least one defect must be identified and have a written corrective-action plan; repaired and waxed surface must pass instructor gloss check (clear tube reflection visible) — incomplete forms or insufficient gloss result in repeat of the wax and buff cycle with re-inspection.
Assessments
AssessmentTypeWeightPass standardMethod & rubric
Mold Making Written Knowledge ExamWritten exam25%80% correct (32 of 40 questions)A 40-question multiple-choice and short-answer exam covering mold anatomy, plug material selection, tooling gelcoat and laminate schedule interpretation, release systems, MEKP catalyst safety, SDS requirements, and mold inspection criteria; questions are mapped to ABYC Composite Boat Builder and ACMA CCT tooling knowledge areas.
Standard met · Safety · Time · Quality/finish · Documentation
Mold Making Skills DemonstrationSkills demonstration45%All six rubric categories scored at 'Meets Standard' or higher; no category may be scored 'Below Standard'The student independently prepares a plug surface, applies a release system, sprays or brushes tooling gelcoat to the specified wet-film thickness, and laminates a two-ply skin coat within the green-cure window; an instructor evaluates each step on a six-category rubric (surface prep, catalyst ratio accuracy, wet-film gauge readings, consolidation quality, flange execution, and safe work practices) aligned to ACMA CCT and ABYC performance standards.
Standard met · Safety · Time · Quality/finish · Documentation
Mold Making Lab LogLog15%Complete entries for all seven lessons; each entry scores 80% or higher on the lab-log rubricThe student submits a lab log with dated entries for every lab and practice session, including material batch calculations (resin weight, catalyst weight, ratio), wet-film gauge readings, laminate thickness measurements, cure observations, defect descriptions, and corrective actions taken; the log is evaluated for accuracy, completeness, and evidence that the student connected measurements to quality outcomes.
Standard met · Safety · Time · Quality/finish · Documentation
Safety and Hazard-Communication Verification CheckSafety audit15%100% correct on all five safety checkpoints; any failed checkpoint requires immediate remediation and recheck before the student may re-enter the spray or laminating areaInstructor administers a five-point safety verification at the start of the tooling gelcoat lab (Lesson 5): correct respirator cartridge type fitted and seal-checked, appropriate gloves donned, SDS location identified and emergency section cited from memory, catalyst added to resin (never resin to catalyst) demonstrated in correct order, and ventilation system confirmed operational; this check is repeated at the start of every subsequent lab session and is a prerequisite for lab participation.
Standard met · Safety · Time · Quality/finish · Documentation
MFG-COMP18-03 Trade course

Hand Layup and Wet Lamination for Composite Boatbuilding

88 hr · $1,320 COMPLIMENTARY

Students master the theory and hands-on practice of open-mold hand layup using polyester, vinyl ester, and epoxy resin systems with woven, chopped-strand, and multiaxial reinforcements common in production boatbuilding. Lessons progress from resin chemistry and laminate schedule reading through full hull-section builds, with emphasis on fiber wet-out, air removal, and achieving the laminate thickness and fiber-volume ratio specified by the designer. All work is mapped to ACMA CCT competency domains and ABYC Composite Boat Builder exam areas covering materials, processes, and quality control.

Outcomes
Course text

Students master the theory and hands-on practice of open-mold hand layup using polyester, vinyl ester, and epoxy resin systems with woven, chopped-strand, and multiaxial reinforcements common in production boatbuilding. Lessons progress from resin chemistry and laminate schedule reading through full hull-section builds, with emphasis on fiber wet-out, air removal, and achieving the laminate thickness and fiber-volume ratio specified by the designer. All work is mapped to ACMA CCT competency domains and ABYC Composite Boat Builder exam areas covering materials, processes, and quality control.

How the course runs. 7 blocks: Resin Systems: Chemistry, Hazards, and Selection; Reinforcement Materials and Laminate Schedule Reading; PPE, Ventilation, and Safe Resin Handling (Safety Check Lesson); Resin Mixing, Gel-Time Testing, and Batch Logging; Hand Layup Fundamentals: Wet-Out, Consolidation, and Air Removal; Contoured Mold Layup: Hull Section Build; Laminate Defects, Troubleshooting, and ACMA/ABYC Quality Standards.

What competent looks like. Select the correct resin system, catalyst/hardener ratio, and reinforcement schedule for a given marine laminate specification and ambient conditions. Execute a hand layup sequence—surface coat, barrier coat, and structural plies—that meets a written laminate schedule within ±10% of target thickness and shows complete wet-out with no dry fiber or entrapped air. Correctly mix catalyzed polyester or vinyl ester resin, verifying gel time with a recorded batch log before application. Use squeegees, rollers, and consolidation tools to achieve void-free laminate, confirmed by visual inspection and a thickness gauge reading. Apply personal protective equipment (respirator, gloves, eye protection) and ventilation controls required by the SDS for each resin and reinforcement used, and demonstrate safe handling and disposal of resin waste. Read and record laminate build data on a ply-by-ply inspection log that meets a shop quality-control standard, supporting ACMA CCT documentation requirements.

Lessons · 7 blocks
#LessonHrTypeObjectiveActivitiesMaterialsCheck
1Resin Systems: Chemistry, Hazards, and Selection10theoryStudents will identify the chemical families (polyester, vinyl ester, epoxy), explain cure mechanisms, state the relevant SDS hazard sections, and select the appropriate resin for a marine application based on service requirements.
  1. Instructor-led lecture with physical samples: students examine three labeled resin containers, locate SDS Sections 2, 4, 7, and 8 for each, and summarize hazards and required PPE on a worksheet.
  2. Small-group case study: given three boat-part scenarios (hull skin, deck core bond, fuel tank laminate), groups argue resin selection using properties tables from the ACMA Composites Manufacturing textbook and present a two-minute rationale.
  3. Individual quiz scenario: students calculate the MEKP catalyst percentage for a 3 kg polyester batch at a specified shop temperature using the manufacturer's technical data sheet, showing work and confirming the gel-time target.
Labeled resin samples (GP polyester, vinyl ester, epoxy), current SDS packets, ACMA Composites Manufacturing textbook, manufacturer TDS sheets, calculators, PPE (nitrile gloves, safety glasses, half-face respirator with organic-vapor cartridges)Written quiz: 10 questions on resin properties, cure chemistry, and SDS hazard identification; pass = 80% or higher.
2Reinforcement Materials and Laminate Schedule Reading10theoryStudents will identify woven roving, chopped strand mat, biaxial and triaxial cloth, and core materials by fiber architecture, state their typical areal weights, and extract ply sequence and thickness targets from a written laminate schedule.
  1. Instructor demonstration with a cut library of reinforcement samples: students handle each type, record fiber architecture, areal weight, and intended structural role on a comparison chart.
  2. Laminate schedule reading exercise: instructor distributes a sample ABYC-style laminate schedule for a 24-foot hull section; students highlight each ply type, cumulative thickness, and transition zones, then answer five comprehension questions.
  3. Pairing exercise: students match five reinforcement samples to their correct position in the laminate schedule, justifying each choice with a written sentence referencing fiber orientation or weight requirements.
Reinforcement sample library (1.5 oz CSM, 24 oz WR, 17 oz biaxial, 54 oz triaxial, Corecell foam core, balsa core), sample laminate schedule document, ACMA textbook Chapter on reinforcements, rulers, marker pensIdentification worksheet: students correctly label all seven reinforcement samples and answer all five schedule comprehension questions; pass = 80% correct.
3PPE, Ventilation, and Safe Resin Handling (Safety Check Lesson)8demoStudents will don full layup PPE in the correct sequence, verify local exhaust ventilation is functioning, mix a small catalyzed resin batch safely, and dispose of resin waste per shop procedure without a single procedural error observed by the instructor.
  1. Instructor demonstration of the complete PPE donning sequence (Tyvek coveralls, chemical-splash goggles, face shield over goggles, nitrile gloves with taped wrists, half-face respirator with OV/P100 cartridges) followed by students donning and being buddy-checked against a printed PPE checklist.
  2. Ventilation verification walkthrough: instructor explains LEV hood positioning, airflow direction relative to the laminator's breathing zone, and air-change-per-hour targets; students record ventilation settings on a shop log form.
  3. Supervised batch mix drill: each student mixes 250 g of catalyzed polyester resin at the specified percentage, records time and temperature, places the pot in a designated gel-watch area, observes gel, then transfers cured waste to the labeled hazardous-waste container per SDS disposal guidance.
Tyvek suits (assorted sizes), chemical-splash goggles, face shields, nitrile gloves, half-face respirators with OV/P100 cartridges, GP polyester resin, MEKP catalyst, digital scale, mixing sticks, labeled waste containers, LEV hood, shop ventilation checklist, SDS binderInstructor observational checklist (24 items covering PPE, ventilation, mixing, labeling, and disposal): zero critical errors allowed; any critical error (wrong respirator cartridge, reversed glove protocol, improper waste disposal) requires immediate re-demonstration before proceeding.
4Resin Mixing, Gel-Time Testing, and Batch Logging10labStudents will mix five successive polyester resin batches at varying catalyst percentages and temperatures, predict gel time using the TDS chart, measure actual gel time with a timer and rod test, and record all data accurately on a batch log.
  1. Pre-lab calculation: students complete a worksheet predicting gel times for five catalyst/temperature combinations using the manufacturer's TDS gel-time chart before touching any materials.
  2. Timed lab rotations: each student mixes one 500 g batch per station, marks start time, probes the pot every two minutes with a clean stick, records actual gel time at the point of no-flow, and compares prediction to result in a difference column.
  3. Batch log debrief: instructor reviews class data displayed on a shared whiteboard; students identify which variable (catalyst %, temperature, pot depth) had the greatest effect and write a two-sentence conclusion in their lab notebook.
GP polyester resin, MEKP catalyst, digital scale (±1 g), mixing cups, mixing sticks, thermometer, stopwatch, TDS gel-time chart, batch log forms, PPE (as Lesson 3)Batch log completeness check: all five entries include weight, catalyst %, temperature, predicted gel time, actual gel time, and difference; actual gel times within ±20% of TDS prediction for at least four of five batches; log passed = all fields complete and four-of-five accuracy criterion met.
5Hand Layup Fundamentals: Wet-Out, Consolidation, and Air Removal18practiceStudents will apply resin to a flat 24 × 24-inch panel using the correct stippling and rolling sequence to achieve full fiber wet-out and consolidate a three-ply laminate schedule with no dry spots or visible voids, confirmed by thickness measurement within ±10% of target.
  1. Instructor demonstration on a prepared flat mold board: instructor applies gel coat, then laminates three plies (1.5 oz CSM / 24 oz WR / 1.5 oz CSM) using brush, squeegee, and ribbed aluminum consolidation roller, narrating every decision about resin volume and roller pressure while students observe and take notes.
  2. Supervised first panel build: each student replicates the three-ply schedule on their own flat board, with the instructor providing real-time verbal coaching; students stop after each ply for a wet-out inspection using a strong light held at a low angle to identify dry fiber before proceeding.
  3. Quality measurement station: after cure, students use a digital thickness gauge at nine marked grid points, record measurements on a data sheet, calculate average thickness and deviation from the target, mark any voids found during a tap test with a china marker, and photograph results for their lab log.
Waxed flat mold boards, GP polyester resin, MEKP, 1.5 oz CSM, 24 oz woven roving, laminating brushes, squeegees, ribbed aluminum rollers, digital thickness gauge, strong inspection lamp, china marker, camera or phone, PPECompleted panel: thickness average within ±10% of schedule target at seven of nine grid points; no dry fiber visible under inspection lamp; no voids found on tap test larger than 1 inch diameter; pass requires all three criteria met.
6Contoured Mold Layup: Hull Section Build22labStudents will apply a release agent, lay up a full laminate schedule on a contoured hull-section mold, achieve continuous wet-out around curves and into the bilge radius, and produce a demolded part that meets the written schedule for ply count, average thickness, and visual quality.
  1. Mold preparation sequence: students apply three coats of paste wax release agent and one coat of PVA release film to the assigned hull-section mold following the posted procedure, then inspect the surface with instructor sign-off before any resin contact.
  2. Full schedule layup over two days: working from a printed laminate schedule (gel coat, skin coat CSM, two plies WR, finishing CSM), students laminate each ply with instructor checkpoints between plies for wet-out and consolidation, recording start time, temperature, and any deviation in their ply-by-ply log.
  3. Demolding and quality audit: after full cure, students demold the part with wooden wedges, trim flash with a trim saw, measure thickness at twelve marked locations, tap-test the full surface, and complete a written quality audit form noting any defects, likely cause, and corrective action for each.
Contoured hull-section mold (fiberglass female mold), paste wax, PVA release film, GP polyester gel coat, GP laminating resin, MEKP, 1.5 oz CSM, 24 oz WR, laminating brushes, squeegees, rollers, digital thickness gauge, trim saw, wooden wedge set, quality audit form, PPEQuality audit form reviewed by instructor: ply count matches schedule; average thickness at all twelve points within ±10% of target; no unbonded areas larger than 0.5 inch on tap test; part successfully demolded without mold damage; all deviations documented with cause and corrective action; pass requires all criteria met.
7Laminate Defects, Troubleshooting, and ACMA/ABYC Quality Standards10theoryStudents will identify at least eight common hand-layup defects from photographs and sample panels, state the root cause and prevention for each, and apply ACMA CCT and ABYC Composite Boat Builder quality acceptance criteria to classify whether a defect is accept, monitor, or repair.
  1. Defect identification station rotation: six stations display labeled defect sample panels (dry fiber, air entrapment/blister, print-through, delamination, resin-rich zone, wrinkle, fish-eye, bridging at corners); students record defect name, visual cue, cause, and prevention on a structured worksheet at each station.
  2. ABYC standards review: instructor leads a guided reading of the relevant ABYC composite construction standard sections dealing with void content, laminate thickness tolerances, and repair criteria; students annotate their printed copies and answer four comprehension questions.
  3. Defect classification exercise: instructor presents ten photographs of laminate defects; students individually classify each as accept, monitor, or repair per the standard criteria and write a one-sentence justification for each decision, then compare answers in pairs.
Defect sample panel library, printed ABYC composite construction standard excerpts, ACMA CCT study guide quality section, defect identification worksheets, classification exercise handout, projector for photo displayDefect worksheet + classification exercise: correct identification and cause for at least seven of eight defect types on worksheet; correct classification with written justification for at least eight of ten photographs; pass = both sub-scores met.
Assessments
AssessmentTypeWeightPass standardMethod & rubric
Layup Theory Knowledge ExamWritten exam25%75% or higher (38 of 50 questions correct)A 50-question written exam covering resin chemistry and selection, reinforcement types and areal weights, laminate schedule interpretation, catalyst ratio calculation, defect identification, and ABYC/ACMA quality acceptance criteria. Questions are formatted as multiple-choice and short-answer to mirror the style of ACMA CCT and ABYC Composite Boat Builder credential exams.
Standard met · Safety · Time · Quality/finish · Documentation
Hull-Section Layup Skills DemonstrationSkills demonstration45%All four quality criteria met: ply count matches schedule; average thickness within ±10% of target at ten of twelve measurement points; no unbonded areas larger than 0.5 inch; mold undamaged after demoldEach student independently laminates a specified four-ply schedule on a contoured hull-section mold without coaching, completing mold prep, gel coat, structural plies, and demold within a single work session. The instructor measures and records thickness, performs a full tap test, and scores the part against the four published criteria.
Standard met · Safety · Time · Quality/finish · Documentation
Laminate Build Lab LogLog15%All seven required entries complete and accurate; batch calculations verified correct; deviations documented with cause and corrective action; legible and organizedStudents submit the cumulative lab notebook maintained across all seven lessons, including batch logs (weight, catalyst %, temperature, predicted and actual gel times), ply-by-ply layup records for both the flat panel and hull-section builds, thickness measurement data sheets, quality audit forms, and the defect classification exercise. The log is reviewed for completeness, numerical accuracy, and the quality of deviation analysis.
Standard met · Safety · Time · Quality/finish · Documentation
PPE and Safe Resin Handling Safety CheckSafety audit15%Zero critical errors on the 24-item observational checklist; any critical error requires immediate re-demonstration before the student may continue lab workThe instructor administers a live observational check during Lesson 3 and again unannounced during the hull-section layup in Lesson 6, scoring each student against the 24-item checklist that covers PPE donning sequence, respirator fit check, ventilation verification, resin batch labeling, gel-watch procedure, and waste disposal. This safety check is a prerequisite gate: students who do not pass cannot advance to the Vacuum Infusion course.
Standard met · Safety · Time · Quality/finish · Documentation
MFG-COMP18-04 Trade course

Vacuum Infusion for Composite Boatbuilding

87 hr · $1,305 COMPLIMENTARY

Students learn to produce structural composite parts using vacuum-assisted resin infusion (VARI), covering process theory, tooling and consumables setup, flow media and resin-feed network design, infusion execution, troubleshooting, and quality evaluation. Lessons align with ACMA CCT knowledge domains for closed-mold processes and ABYC composite standards for laminate integrity. Emphasis is placed on hazard control for styrene and mixed-resin systems, correct vacuum-integrity testing, and documenting process variables to meet production traceability requirements.

Outcomes
Course text

Students learn to produce structural composite parts using vacuum-assisted resin infusion (VARI), covering process theory, tooling and consumables setup, flow media and resin-feed network design, infusion execution, troubleshooting, and quality evaluation. Lessons align with ACMA CCT knowledge domains for closed-mold processes and ABYC composite standards for laminate integrity. Emphasis is placed on hazard control for styrene and mixed-resin systems, correct vacuum-integrity testing, and documenting process variables to meet production traceability requirements.

How the course runs. 7 blocks: Infusion Process Theory and Closed-Mold Fundamentals; Chemical Hazards, PPE, and Ventilation for Infusion Resins; Tooling, Consumables, and Infusion Stack Setup; Resin Feed Network Design and Infusion Front Control; Resin Mixing, Pot Life, and Process Documentation; Defect Recognition, Troubleshooting, and Quality Inspection; Integrated Infusion Build: Marine Hull Panel with Full Documentation.

What competent looks like. Explain the physical principles of vacuum-assisted resin infusion and compare the process to open-mold hand layup in terms of fiber volume fraction, VOC emissions, and laminate consistency. Set up a complete infusion stack — including peel ply, flow media, feed and vacuum lines, and vacuum bag — on a marine-grade mold without assistance, achieving and holding a vacuum level within the acceptable range for the resin system in use. Design and execute a resin-feed network for a flat panel and a simple curved hull section, controlling infusion front progression to eliminate dry spots. Mix infusion-grade vinyl ester or epoxy resin within the manufacturer's specified pot-life window, record batch records, and complete infusion before gel. Identify, diagnose, and correct the five most common infusion defects — bag leak, dry spot, race-tracking, bridging, and resin starvation — using established troubleshooting procedures. Demonstrate full PPE compliance, safe handling of catalyzed resin under vacuum, and emergency shutdown procedures consistent with OSHA 29 CFR 1910 Subpart Z chemical-hazard requirements and ACMA CCT safety competencies.

Lessons · 7 blocks
#LessonHrTypeObjectiveActivitiesMaterialsCheck
1Infusion Process Theory and Closed-Mold Fundamentals10theoryStudents will be able to explain Darcy's Law as it applies to resin flow through a fiber preform, describe the role of vacuum pressure in driving resin, and compare VARI to VARTM and hand layup in terms of fiber volume fraction and VOC reduction.
  1. Instructor-led lecture with annotated cross-section diagrams showing the infusion stack layers and the pressure differential that drives resin flow; students label a blank stack diagram and submit for review.
  2. Small-group reading and discussion of a published ACMA technical bulletin on closed-mold process selection; groups identify three advantages and two limitations of vacuum infusion for marine hull construction.
  3. Individual written exercise: calculate theoretical fiber volume fraction for a given glass weight and resin density using the rule-of-mixtures formula, then compare calculated value to a published ABYC composite-laminate reference value.
Whiteboard, ACMA Composites Industry Alliance training materials, ABYC Standards and Technical Information Reports for Small Craft (composite laminate sections), engineering calculator, blank infusion-stack labeling worksheetsFive-question short-answer quiz on Darcy's Law, pressure differential, fiber volume fraction calculation, and VARI vs. hand-layup VOC comparison; 80% correct required to proceed.
2Chemical Hazards, PPE, and Ventilation for Infusion Resins10theoryStudents will identify the specific health hazards of infusion-grade vinyl ester and epoxy resin systems, select correct PPE for each, and demonstrate compliance with OSHA Hazard Communication requirements including SDS interpretation.
  1. SDS review station: students rotate through printed SDS documents for an infusion vinyl ester (styrene-containing), a low-styrene epoxy infusion resin, and a MEKP catalyst; each student completes a structured SDS-interpretation worksheet identifying hazard class, exposure limits, first-aid measures, and required PPE.
  2. Instructor demonstration of respirator cartridge selection (organic-vapor cartridges for styrene systems vs. dust/P100 for epoxy particulate during sanding post-cure); students don half-face respirators, check seal with fit-check procedure, and record results on a PPE log.
  3. Scenario-based discussion: instructor presents three accident scenarios (resin splash to eyes, styrene overexposure in enclosed mold, catalyst (MEKP) skin contact); student teams identify the correct emergency response using SDS guidance and OSHA 29 CFR 1910.151 first-aid requirements.
Printed SDS packets (vinyl ester, epoxy, MEKP), half-face respirators with OV/P100 cartridges, nitrile gloves, chemical splash goggles, face shields, PPE log forms, OSHA Hazard Communication standard reference (29 CFR 1910.1200)PPE donning observed by instructor using a five-point checklist (respirator, gloves, eye protection, skin coverage, decontamination sequence); all five points must be performed correctly before the student is cleared for lab work. ACMA CCT safety domain mapped here.
3Tooling, Consumables, and Infusion Stack Setup15demoStudents will correctly identify each consumable layer in an infusion stack by function and install a complete stack — release coat, peel ply, reinforcement, flow media, spiral wrap feed lines, vacuum bag film, and sealant tape — on a flat demonstration mold with no missed steps.
  1. Instructor live demonstration on a 2 ft × 2 ft waxed aluminum mold, naming and explaining each layer as it is applied; students annotate a blank exploded-stack diagram in real time.
  2. Hands-on partner exercise: each pair of students installs a complete infusion stack on an identical flat mold, referencing a laminate schedule card; instructor observes bag-film overlap at corners and sealant-tape continuity.
  3. Vacuum-integrity test: students connect the vacuum pump, draw down to target vacuum level specified by the resin manufacturer's technical data sheet, isolate the pump, and monitor the gauge for three minutes; any drop beyond the allowable rate triggers troubleshooting before proceeding.
Waxed aluminum or fiberglass flat molds, peel ply (nylon), flow media (biaxial mesh), spiral wrap tubing, vacuum bag film, sealant (tacky) tape, T-fittings, vacuum gauge, rotary vane vacuum pump, laminate schedule cards, resin TDS for vacuum-level specificationInstructor uses a six-point stack-setup checklist; all six points must be correct (layer sequence, sealant tape continuity, line placement, gauge connection, target vacuum achieved and held within allowable drop rate). Students who fail one or more points re-setup before advancing. ACMA CCT closed-mold process domain mapped here.
4Resin Feed Network Design and Infusion Front Control12labStudents will design a resin-feed and vacuum-line layout for a given panel geometry that produces an even infusion front, execute the infusion, and demonstrate front progression from feed to vacuum line without dry spots or race-tracking.
  1. Design exercise: instructor provides scaled drawings of three panel geometries (rectangle, tapered hull section, joggled step); student teams sketch feed-line patterns and vacuum-line placement on the drawings, then present their rationale to the class for critique using ACMA flow-analysis principles.
  2. Controlled-dye infusion: students infuse a flat panel using water-soluble dye mixed into water (no resin) to visualize flow front on a clear plastic mold backing; photographs are taken at 2-minute intervals and compared to the predicted front.
  3. Production infusion of a 2 ft × 3 ft biaxial glass panel using catalyzed vinyl ester; students monitor front progression, adjust clamps on feed lines as needed, and close the resin pot when the vacuum line shows resin arriving.
Scaled panel-geometry drawings, clear acrylic mold backing for dye test, water-soluble dye, biaxial fiberglass reinforcement (0/90 and ±45), infusion vinyl ester resin, MEKP catalyst, graduated mixing containers, digital scale, digital timer, vacuum pump, spiral wrap, flow media, peel ply, vacuum bag consumables, personal protective equipmentDye-test photographs reviewed by instructor; front must be within 15% symmetry tolerance for the panel geometry. Production panel is post-cured and cross-sectioned at one corner; instructor inspects for dry spots, gross voids, or resin-starved areas using a 10× loupe. Pass = no dry spots larger than 6 mm and no race-tracking channels visible. ABYC composite laminate quality standard referenced.
5Resin Mixing, Pot Life, and Process Documentation10labStudents will mix an infusion resin system to the manufacturer's specified ratio, calculate available infusion time from pot-life data at ambient temperature, record a complete batch record, and complete an infusion within the pot-life window.
  1. Bench exercise: students use a resin technical data sheet to calculate MEKP percentage by weight for three different batch sizes at two shop temperatures; results are checked against TDS tables and discrepancies discussed.
  2. Timed gel demonstration: instructor mixes a small resin sample at the maximum and minimum recommended catalyst levels while students record time-to-gel using disposable wooden stir sticks at 5-minute intervals; students graph gel time vs. catalyst percentage.
  3. Full timed infusion: each student mixes a production batch (quantity determined by laminate schedule), records weight, catalyst percentage, mix time, shop temperature, and relative humidity on a batch-record form, then executes an infusion and timestamps front arrival at the vacuum line.
Infusion vinyl ester resin (or epoxy for epoxy-infusion station), MEKP catalyst (or appropriate epoxy hardener), digital scale (0.1 g resolution), disposable mixing containers, wooden stir sticks, digital thermometer, sling psychrometer or digital hygrometer, batch-record forms, stopwatch, PPEBatch-record form reviewed by instructor for completeness (resin type, lot number, catalyst weight, percentage, shop temp, humidity, mix start time, infusion start time, front arrival time); all fields must be filled. Calculated pot-life utilization must be ≤ 80% of TDS-stated gel time. 100% completion of form required to pass. ACMA CCT process-documentation domain mapped here.
6Defect Recognition, Troubleshooting, and Quality Inspection15practiceStudents will identify the five primary vacuum-infusion defects — bag leak, dry spot, race-tracking, bridging, and resin starvation — from cured laminate specimens and video case studies, state the cause of each, and describe the corrective action.
  1. Defect specimen station: instructor provides six pre-made cured laminate specimens, each containing one deliberately induced defect; students examine each with a tap-test mallet and 10× loupe, record defect type, probable cause, and recommended repair or rejection decision on a defect log sheet.
  2. Video case-study analysis: students watch three short instructor-recorded infusion videos — one showing a bag leak event, one showing race-tracking along a flange, one showing bridging at a radius — and complete a structured root-cause analysis worksheet for each.
  3. Live troubleshooting drill: instructor deliberately creates a small bag leak mid-infusion on a demonstration panel; students, working in pairs, locate the leak using the vacuum gauge and audible hiss, apply sealant tape to isolate and repair, and restore vacuum within 3 minutes, documenting the event on a nonconformance report form.
Defect laminate specimen set (six panels), tap-test mallet (coin or small brass hammer), 10× loupe, defect log sheets, nonconformance report forms, vacuum-infusion demonstration setup, sealant tape, vacuum gauge, root-cause analysis worksheets, projector for video playbackDefect log sheet scored by instructor; students must correctly identify defect type and primary cause for at least five of six specimens and specify an appropriate corrective action for each. Pass = 5/6 correct identifications with viable corrective action stated. ACMA CCT quality-inspection domain and ABYC composite repair/inspection domain mapped here.
7Integrated Infusion Build: Marine Hull Panel with Full Documentation15labEach student will independently execute a complete vacuum infusion of a curved marine structural panel — from mold prep through post-cure and final quality inspection — producing a batch record, process log, and a written summary that meets industry traceability requirements.
  1. Individual mold preparation and stack installation: student applies release, lays up the specified biaxial and core laminate schedule (instructor-provided drawing), installs infusion consumables, and achieves a passing vacuum-integrity test before calling for instructor sign-off to proceed.
  2. Solo infusion execution: student mixes resin batch, records all batch-record fields, executes infusion from resin introduction to vacuum-line shutoff, photographs infusion front at three intervals, and timestamps each event.
  3. Post-cure quality inspection and written summary: after cure, student trims part, performs visual inspection and tap test, records any anomalies on a nonconformance report, and writes a one-page process summary covering material lot numbers, process variables, observations, and inspection results — modeled on production traveler documentation used in the marine composites industry.
Curved mold (instructor-provided, representing a hull section), specified fiberglass reinforcement (biaxial and woven roving per laminate schedule), structural core material (PVC foam or balsa), infusion vinyl ester resin, MEKP, full infusion consumable set, digital scale, thermometer, hygrometer, batch-record and process-log forms, nonconformance report form, tap-test mallet, 10× loupe, PPE, trimming tools (pneumatic cutter or oscillating saw, hearing protection)Instructor evaluates finished panel against a five-criterion rubric: (1) vacuum integrity achieved before infusion, (2) batch record complete and gel-time utilization ≤ 80%, (3) no dry spots > 6 mm on visual and tap-test inspection, (4) process log fully completed with timestamps and photos, (5) written summary includes all required fields. Pass = 4 of 5 criteria met at acceptable standard; criterion 1 (vacuum integrity) is mandatory — a part infused without a passing integrity test scores zero. ACMA CCT and ABYC composite domain competencies mapped here.
Assessments
AssessmentTypeWeightPass standardMethod & rubric
Vacuum Infusion Written Knowledge ExamWritten exam25%75% or higher (30 of 40 questions correct)A 40-question closed-book multiple-choice and short-answer exam covering Darcy's Law and resin-flow theory, infusion-stack layer sequence and function, resin-to-catalyst ratios and pot-life calculations, vacuum-integrity test criteria, defect identification and root causes, and chemical-hazard and SDS interpretation. Questions are mapped to ACMA CCT closed-mold-process and safety knowledge domains and to ABYC composite laminate content areas.
Standard met · Safety · Time · Quality/finish · Documentation
Infusion Skills DemonstrationSkills demonstration45%Pass all five mandatory checkpoints; no checkpoint may be skipped or waivedThe student performs a complete vacuum infusion of an instructor-specified panel in real time while the instructor evaluates five checkpoints using a signed skills checklist: (1) correct PPE donned before resin contact, (2) complete infusion stack installed in correct layer order, (3) vacuum integrity test passed before resin introduction, (4) batch record completed with all required fields before resin pot is opened, (5) infusion front reaches vacuum line without dry spots and resin pot is closed within pot-life window. This demonstration is directly aligned to ACMA CCT closed-mold-process performance criteria.
Standard met · Safety · Time · Quality/finish · Documentation
Lab Process Log PortfolioLog15%All seven lesson lab logs submitted; average score of 80% across the scoring rubricStudents maintain a running lab log begun in Lesson 3 and completed through Lesson 7, containing batch records, vacuum-gauge readings, infusion timestamps, defect-log sheets, nonconformance reports, and process photos for every hands-on session. The instructor scores each entry on completeness, accuracy of recorded data, and clarity of the written observations using a four-point rubric per entry; the portfolio demonstrates the process-documentation discipline required for production traceability under ACMA CCT and marine-industry quality-management expectations.
Standard met · Safety · Time · Quality/finish · Documentation
Chemical Safety and PPE Compliance CheckSafety audit15%All six checklist items correct; any single failure requires immediate remediation and re-check before the student may continue lab workA proctored, unannounced observation conducted by the instructor during one of the resin-mixing or infusion sessions in Lessons 4–7; the instructor verifies six items: (1) correct respirator with appropriate cartridges donned and fit-checked, (2) chemical-splash goggles or face shield worn during resin handling, (3) nitrile gloves of appropriate thickness worn throughout resin contact, (4) skin coverage meeting SDS requirements, (5) student can state the location of the SDS for the resin system in use, (6) student can demonstrate the emergency eyewash station activation procedure. This check maps directly to OSHA 29 CFR 1910.1200 Hazard Communication requirements and to the ACMA CCT safety-compliance domain.
Standard met · Safety · Time · Quality/finish · Documentation
MFG-COMP18-05 Trade course

Gelcoat: Application, Color Matching, and Surface Finishing

87 hr · $1,305 COMPLIMENTARY

Students learn the chemistry, mixing, application, and finishing of polyester and vinyl ester gelcoat as used in production and custom boatbuilding. Emphasis is placed on achieving a Class A surface, accurate color matching, and minimizing common defects such as pinholes, fisheyes, and runs. Lessons align to ABYC Composite Boat Builder and ACMA CCT exam competency areas covering surface preparation, coating application, and quality control.

Outcomes
Course text

Students learn the chemistry, mixing, application, and finishing of polyester and vinyl ester gelcoat as used in production and custom boatbuilding. Emphasis is placed on achieving a Class A surface, accurate color matching, and minimizing common defects such as pinholes, fisheyes, and runs. Lessons align to ABYC Composite Boat Builder and ACMA CCT exam competency areas covering surface preparation, coating application, and quality control.

How the course runs. 7 blocks: Gelcoat Chemistry, Safety, and Material Selection; Catalyst Ratio, Pot Life, and Mixing Procedures; Spray Application: Equipment Setup, Technique, and Film Build; Brush-and-Roll Application and Tooling Gelcoat; Color Matching and Tinting; Surface Finishing: Sanding, Compounding, and Polishing; Defect Diagnosis, Quality Control Inspection, and Documentation.

What competent looks like. Mix gelcoat to correct resin-to-MEKP catalyst ratios and verify pot life using manufacturer technical data sheets. Apply gelcoat by spray gun and brush/roller to achieve uniform film thickness within the specified range, confirmed by wet-film gauge measurement. Diagnose and correct at least six common gelcoat defects (pinholes, crazing, fisheyes, runs, porosity, and color variation) using standard corrective procedures. Perform a multi-step color match—including tinting, drawdown comparison, and spectrophotometer-assisted verification—that achieves an acceptable visual and measured match. Execute a complete surface finishing sequence (block sanding through compound and polish) producing a surface free of visible scratches at final grit. Follow all OSHA respiratory, skin, and fire-prevention requirements for styrene- and MEKP-containing materials, correctly selecting and donning required PPE.

Lessons · 7 blocks
#LessonHrTypeObjectiveActivitiesMaterialsCheck
1Gelcoat Chemistry, Safety, and Material Selection10theoryStudents will identify the chemical composition of orthophthalic, isophthalic, and vinyl ester gelcoats, explain the peroxide-catalyzed cure mechanism, and state all OSHA and NFPA hazard controls required before handling.
  1. Read and annotate three manufacturer TDS/SDS sheets for different gelcoat types; complete a table comparing viscosity, catalyst range, pot life, and recommended film build for each.
  2. Participate in an instructor-led discussion on styrene emission hazards, OSHA PEL/TLV limits, and the hierarchy of controls (engineering, administrative, PPE); record key points in a trade notebook.
  3. Complete a written scenario exercise in which students select the correct gelcoat type (cosmetic, structural, tooling) and hazard controls for three different boatbuilding situations.
Manufacturer TDS and SDS documents for at least three gelcoat products, OSHA 29 CFR 1910.94 ventilation standard, NFPA 30 flammable-liquids reference, trade notebook, whiteboard.Short written quiz (10 questions, multiple-choice and short-answer) on gelcoat chemistry, cure mechanism, and required PPE/engineering controls; passing score 75%.
2Catalyst Ratio, Pot Life, and Mixing Procedures12theoryStudents will accurately measure and mix gelcoat to manufacturer-specified catalyst ratios, confirm correct gel time with a stopwatch, and document results against TDS specifications.
  1. Instructor demonstrates graduated-cylinder and digital-scale methods for measuring MEKP catalyst; students each mix three 200-gram test batches at low, mid, and high catalyst percentages within the manufacturer's allowable range and record gel times.
  2. Students compare their measured gel times to TDS predictions and discuss the effect of ambient temperature and humidity using a temperature-compensation chart; adjust a second set of batches for a simulated 90°F shop condition.
  3. Students practice disposal of catalyzed waste per SDS instructions—small exothermic batch in a metal container with water addition—under instructor supervision, then complete a mixing log with batch ID, weight, ratio, ambient temp, and actual gel time.
Production gelcoat (white and gray), MEKP catalyst, digital gram scale, graduated cylinders, stopwatch, thermometer, wet-film gauge, mixing sticks, metal waste containers, water, mixing log forms, full PPE kit (nitrile gloves, face shield, chemical splash goggles, half-mask respirator with organic-vapor/P100 cartridges, Tyvek sleeves).Instructor reviews each student's three mixing logs; gel times must fall within ±2 minutes of TDS prediction at ambient temperature; no batch with ratio outside manufacturer limits accepted. Pass = 100% of batches logged correctly with compliant ratios.
3Spray Application: Equipment Setup, Technique, and Film Build18labStudents will set up and operate a pressure-pot or HVLP gelcoat spray system, apply gelcoat to a test panel in two cross-coat passes, and achieve a uniform wet-film thickness in the range specified by the manufacturer.
  1. Instructor demonstrates spray gun disassembly, fluid-tip selection, and air-pressure/fluid-pressure settings for gelcoat viscosity; students disassemble, clean, and reassemble their own spray guns, then spray air-only patterns on kraft paper to verify fan shape and atomization before loading gelcoat.
  2. Each student applies two cross-coat passes of catalyzed white gelcoat to a 12-by-18-inch waxed test panel, checking wet-film thickness with a wet-film gauge after each pass and adjusting gun distance and speed to hit the target thickness range from the TDS.
  3. After cure, students demold test panels and visually inspect for runs, sags, dry spray, and orange peel; instructor leads a structured critique where each student records the likely cause and corrective action for any defect found on their own panel.
Pressure-pot spray system or HVLP gun with appropriate fluid tip, gelcoat (white, production grade), MEKP catalyst, wet-film gauge, waxed aluminum test panels (12×18 in.), mold release (carnauba or PVA), kraft paper, air-pressure gauge, fluid-pressure gauge, solvent for cleanup (acetone), PPE as above, ventilated spray booth with explosion-proof fan.Instructor measures five random wet-film readings per panel with a calibrated wet-film gauge; all five must fall within manufacturer target range (typically 18–24 mils wet, verify against TDS). Zero runs or sags accepted. Pass = all five readings in range, no uncorrected defects. Rubric score 75% or higher required.
4Brush-and-Roll Application and Tooling Gelcoat8practiceStudents will apply tooling gelcoat and cosmetic gelcoat by brush and foam roller to a mold surface and an open-mold laminate, achieving a void-free, even film without introducing contamination.
  1. Students prepare a small fiberglass mold surface by cleaning with solvent wipe, applying and buffing release agent, and verifying a water-break-free surface before any gelcoat is applied.
  2. Each student mixes a small batch of tooling gelcoat and applies it with a natural-bristle brush in two thin passes, stippling the first coat to collapse air bubbles before the second pass; a second group applies cosmetic gelcoat to a cured laminate panel using a foam roller.
  3. After cure, students use a raking light to inspect for pinholes and use a magnifying loupe to record pinhole count and location, then fill identified pinholes with a toothpick-applied gelcoat repair paste, re-inspect, and document results in a defect log.
Tooling gelcoat, cosmetic white gelcoat, MEKP, natural-bristle 2-inch brushes, 4-inch foam rollers, small fiberglass mold (pre-made by program), mold release wax, clean lint-free rags, acetone, magnifying loupe, raking-light fixture, defect-log forms, PPE.Instructor inspects cured panel under raking light; panel must show no unfilled pinholes and even color coverage with no dry or thin spots visible; defect log completed with corrective actions noted. Pass = zero unfilled pinholes, log complete.
5Color Matching and Tinting14labStudents will tint a base gelcoat to match a provided production color chip using colorimetric paste additions, confirm match by drawdown card comparison and spectrophotometer reading, and document the formula.
  1. Instructor demonstrates the subtractive color wheel as applied to gelcoat pigments, explains metamerism, and shows the drawdown-card technique; students practice making drawdown cards with untinted gelcoat to establish a baseline for opacity and sheen.
  2. Each student receives a production color chip and a white gelcoat base; using manufacturer-supplied universal tinting pastes and a starting formula from an instructor-provided reference chart, students tint in small increments, making drawdown cards after each addition and comparing under a daylight-balanced light source.
  3. Students use a bench spectrophotometer (or a calibrated color meter available in the shop) to record ΔE values between their tinted gelcoat drawdown and the target chip; they adjust tint until ΔE is within an acceptable visual-match tolerance, then record the complete formula (base, tints by weight, ΔE final) on a color-formula card.
White production gelcoat, universal gelcoat tinting pastes (yellow, red, blue, black, raw umber at minimum), MEKP, drawdown cards (sealed white card stock), drawdown bar or tongue depressor, daylight-balanced light box, bench spectrophotometer or calibrated color meter, digital gram scale, color-formula cards, PPE.Final cured drawdown card is placed beside the target chip in the light box and evaluated by instructor; ΔE ≤ 3.0 (or a visually acceptable match if spectrophotometer not available, confirmed by two instructors independently). Color formula card must be complete and reproducible. Pass = ΔE ≤ 3.0 or dual-instructor visual pass, plus complete formula card.
6Surface Finishing: Sanding, Compounding, and Polishing15labStudents will execute a full multi-stage hand and machine finishing sequence on a cured gelcoat panel, progressing from block sanding through final machine polish to produce a defect-free, high-gloss surface.
  1. Students wet-sand a cured gelcoat panel through a graded sequence (starting at 220 or 320 grit to remove surface defects, progressing through 400, 600, 800, 1000, 1500, and 2000 grit) using a hard rubber sanding block, keeping the surface flooded with water and changing direction 90° at each grit step; they check scratch removal under a raking light before advancing.
  2. Students apply a marine-grade rubbing compound with a dual-action orbital polisher (foam cutting pad), working in overlapping passes and monitoring panel temperature to avoid burning; they wipe off residue and inspect under raking light for remaining 2000-grit scratches before moving to polish.
  3. Students apply a finishing polish with a soft foam finishing pad on the orbital polisher, then hand-apply a light carnauba or polymer wax, buff to a final gloss, and measure the result with a gloss meter at 20°, 60°, and 85° angles; readings are recorded in the lab log.
Cured gelcoat test panels (from previous lessons or purpose-sprayed), wet-dry sandpaper (220–2000 grit), hard rubber sanding block, spray bottle with water, dual-action orbital polisher, foam cutting and finishing pads, marine rubbing compound, finishing polish, carnauba or polymer wax, clean microfiber cloths, gloss meter, raking-light fixture, lab log forms, safety glasses, nitrile gloves, hearing protection.Instructor measures gloss with a calibrated gloss meter; 60° gloss reading must be ≥ 85 GU (gloss units) on a production-color panel, with no visible scratches under raking light at arm's length. Lab log entries complete for each sanding step. Pass = ≥ 85 GU at 60°, no visible scratches, complete log.
7Defect Diagnosis, Quality Control Inspection, and Documentation10theoryStudents will identify, diagnose root causes for, and prescribe corrective actions for a range of intentionally produced gelcoat defects on a set of sample panels, then complete a quality-control inspection report to industry standards.
  1. Instructor presents a 'defect library' of panels with documented defects (pinholes, fisheyes, crazing, runs/sags, dry spray, solvent popping, alligatoring, and blush) and leads a diagnostic discussion for each; students complete a defect-identification worksheet that asks for defect name, likely cause (contamination, ratio error, film build, cure-condition error, etc.), and standard corrective procedure.
  2. Students rotate through six unknown-defect stations, each with a defect panel; at each station they record their diagnosis and corrective-action prescription on an inspection form without instructor input, then debrief as a group.
  3. Students perform a final QC inspection on their own polished panel from Lesson 6 using a structured boat-industry inspection checklist (visual under raking light, gloss-meter readings, wet-film verification from a duplicate batch panel); they complete and sign a formal QC report that mirrors the kind of documentation required by ABYC and ACMA audit trails.
Defect-library sample panels (pre-made), defect-identification worksheets, six station cards with unknown-defect panels, inspection forms, QC report forms (modeled on ABYC/ACMA documentation examples), raking-light fixture, gloss meter, magnifying loupe, pens.Students must correctly identify, diagnose, and prescribe corrective actions for at least 5 of 6 unknown-defect stations (83% accuracy); QC report must be fully completed with accurate gloss-meter data and signed. Pass = ≥ 83% defect-station accuracy, complete and accurate QC report.
Assessments
AssessmentTypeWeightPass standardMethod & rubric
Gelcoat Theory Knowledge ExamWritten exam25%75% correct (38 of 50 questions)A 50-question closed-book written exam covering gelcoat chemistry and types, catalyst ratios and pot life, hazard controls and PPE selection, spray-equipment setup, defect identification, color theory, and QC documentation; questions are in multiple-choice and short-answer format aligned to ABYC Composite Boat Builder and ACMA CCT knowledge domains.
Standard met · Safety · Time · Quality/finish · Documentation
Spray Application Skills DemonstrationSkills demonstration45%All critical items scored; rubric score ≥ 75%; zero safety violationsStudents set up a spray system from scratch, mix a catalyzed batch within the allowable ratio range, and spray a 12-by-18-inch test panel in two cross-coat passes; an instructor scores setup, mixing documentation, spray technique, and film-build uniformity using a standardized rubric, with wet-film gauge verification of all five checkpoints falling within the manufacturer's target range.
Standard met · Safety · Time · Quality/finish · Documentation
Lab Log PortfolioLog15%All seven lesson lab logs submitted; average score ≥ 75% across portfolio rubricStudents submit a complete portfolio of mixing logs, defect logs, color-formula cards, sanding-sequence records, gloss-meter data sheets, and QC inspection reports collected across all seven lessons; entries are scored for accuracy, completeness, and correct unit notation, and the portfolio is reviewed as evidence of consistent documentation habits expected on a production floor.
Standard met · Safety · Time · Quality/finish · Documentation
PPE and Hazard-Communication Safety CheckSafety audit15%100% on all critical PPE and hazard-communication items; no attempt with missing critical PPEBefore any spray session, an instructor conducts an unannounced verification using a binary (pass/fail per item) checklist confirming: correct respirator cartridge type and seal check performed, chemical-splash goggles worn, nitrile gloves of adequate thickness, no open flames or ignition sources present, SDS located and accessible, and catalyzed waste disposal container in place; a single critical failure stops the session and requires a re-check on a subsequent day.
Standard met · Safety · Time · Quality/finish · Documentation
MFG-COMP18-06 Trade course

Fiberglass & Composites Repair

87 hr · $1,305 COMPLIMENTARY

Students develop hands-on competency in diagnosing, preparing, and executing structural and cosmetic repairs to fiberglass and composite boat hulls, decks, and components using industry-standard laminating, fairing, and gelcoat techniques. The course covers damage assessment, substrate preparation, core replacement, wet layup and vacuum-bagged patch repairs, and finish restoration aligned with ABYC and ACMA CCT standards. Emphasis is placed on safe chemical handling, surface quality that meets production tolerances, and documentation practices required in professional repair facilities.

Outcomes
Course text

Students develop hands-on competency in diagnosing, preparing, and executing structural and cosmetic repairs to fiberglass and composite boat hulls, decks, and components using industry-standard laminating, fairing, and gelcoat techniques. The course covers damage assessment, substrate preparation, core replacement, wet layup and vacuum-bagged patch repairs, and finish restoration aligned with ABYC and ACMA CCT standards. Emphasis is placed on safe chemical handling, surface quality that meets production tolerances, and documentation practices required in professional repair facilities.

How the course runs. 7 blocks: Damage Assessment and Repair Planning; Surface Preparation: Grinding, Tapering, and Scarfing; Laminate Patch Repair: Wet Layup and Vacuum Bagging; Core Replacement in Sandwich Panels; Osmotic Blister Treatment and Barrier Coat Application; Cosmetic Repair: Gelcoat Patching, Fairing, and Polishing; Shop Safety, Hazard Communication, and Repair Documentation.

What competent looks like. Diagnose fiberglass and composite damage types—including delamination, osmotic blistering, core rot, impact fractures, and gelcoat crazing—using visual inspection, tap testing, and moisture meters, and document findings in a written damage report. Prepare damaged substrates by grinding, beveling, and scarfing to the correct taper ratio for structural laminate patches, following manufacturer data sheets and ABYC composite repair guidance. Fabricate and cure wet-layup and vacuum-bagged laminate repairs using polyester, vinyl ester, and epoxy resin systems, achieving void-free bonds with lap-shear strength meeting design specifications. Replace deteriorated balsa and foam core sections in deck and hull panels, bonding new core material and restoring the sandwich laminate schedule to match the original construction. Apply, fair, and finish gelcoat repairs and topcoat patches that blend with surrounding surfaces to within accepted color and gloss tolerances, using proper catalyzation, spray or brush application, and wet-sanding/buffing sequences. Work throughout all repair tasks in compliance with OSHA Hazard Communication, respiratory protection, and lockout/tagout requirements, and record all safety and quality steps in a lab log suitable for professional shop documentation.

Lessons · 7 blocks
#LessonHrTypeObjectiveActivitiesMaterialsCheck
1Damage Assessment and Repair Planning10theoryStudents will correctly identify and categorize at least five classes of fiberglass and composite damage and produce a written repair plan that specifies materials, laminate schedule, and sequence of operations.
  1. Lecture and illustrated slide presentation covering damage types: star cracks, stress cracks, osmotic blisters, delamination, core rot, impact punctures, and fastener pull-out; students take structured notes using a provided damage taxonomy chart.
  2. Hands-on tap-test and moisture-meter stations using pre-prepared sample panels with hidden defects; students locate and mark defect boundaries, then compare findings to an instructor key and discuss false positives.
  3. Small-group case study using photographs and boat records from three real repair scenarios; each group writes a one-page repair plan listing damage classification, resin system selection rationale, laminate schedule, surface preparation steps, and estimated material quantities using supplier data sheets.
Moisture meters (pin-type and pinless), rubber tap-testing mallets, sample fiberglass panels with seeded defects, ABYC Composite Boat Builder study guide, ACMA CCT reference manual, manufacturer technical data sheets (TDS) for polyester, vinyl ester, and epoxy systems, whiteboard, projectorStudents submit a written repair plan for one assigned scenario; instructor scores against a rubric covering correct damage classification, appropriate resin system choice, correct laminate schedule, and safety notes—minimum passing score 75%.
2Surface Preparation: Grinding, Tapering, and Scarfing14labStudents will prepare a damaged fiberglass panel for structural repair by grinding to bright laminate, cutting a correctly tapered scarf at the specified ratio, and verifying geometry with straightedge and calipers before any resin is mixed.
  1. Instructor demonstration of angle grinder setup, disc selection (36- to 80-grit aluminum-oxide), grinding stance, and feathering technique on a scrap hull section; students observe correct PPE donning—respirator (minimum N95 or P100 for grinding dust), safety glasses, face shield, nitrile gloves, and Tyvek suit—before any grinder is energized.
  2. Students individually grind assigned damaged panels, removing all cracked laminate and gelcoat to clean fiberglass; instructor spot-checks surface by visual inspection and tap test; students regrind areas that still ring hollow.
  3. Students lay out and cut a scarf taper (12:1 ratio is standard practice for structural repairs) using a straightedge and marker, grind the bevel, and measure taper geometry with digital calipers; they record actual taper ratio in their lab log and note any deviation from target.
Angle grinders (4.5-inch), grinding discs (36, 60, 80 grit), die grinders with carbide burrs, digital calipers, straightedges, chalk line, P100 half-face respirators, face shields, safety glasses, nitrile and leather gloves, Tyvek coveralls, hearing protection, vacuum shrouds or local exhaust ventilation, damaged fiberglass panel sections (hull offcuts), lab log notebooksInstructor measures three points along the taper with calipers; taper ratio must be between 11:1 and 13:1, surface must be free of shiny resin and delaminated plies as confirmed by tap test—pass requires all three measurements within tolerance and a clean tap-test result.
3Laminate Patch Repair: Wet Layup and Vacuum Bagging18labStudents will fabricate a multi-ply fiberglass laminate patch repair using both wet layup and vacuum-bagged methods, achieving a cured patch that is void-free on destructive cross-section inspection and meets the original laminate thickness within ±10%.
  1. Instructor demonstrates wet-layup patch sequence on a scarfed panel: wipe with solvent, apply release agent to tape border, mix polyester or epoxy resin per TDS (correct ratio, correct pot-life awareness), wet out each ply on a flat board, consolidate with a grooved aluminum roller, and apply peel ply as the final layer; students replicate the process on their own prepared panels.
  2. Students set up a vacuum-bag repair on a second scarfed panel using perforated release film, bleeder/breather cloth, and bagging film; they connect a vacuum pump, check for leaks with a gauge (target vacuum level per instructor direction and resin TDS), and monitor bag for the full cure cycle, logging vacuum readings every 15 minutes.
  3. After cure, students cut cross-section coupons from both repair types with a diamond-blade wet saw, inspect under a 10× loupe for voids and dry fiber, and measure thickness at three points with calipers; results are entered in the lab log and compared to the original laminate schedule.
Polyester, vinyl ester, and epoxy resin kits with hardeners/catalysts, woven roving, biaxial and chopped-strand mat (CSM), peel ply, perforated release film, bleeder/breather cloth, bagging film, sealant tape, vacuum pump, vacuum gauge, grooved aluminum rollers, plastic squeegees, mixing cups and sticks, gram scale, diamond-blade wet saw, digital calipers, 10× loupes, solvent (acetone), PPE as in Lesson 2, ACMA CCT reference manualCross-section coupon shows no voids larger than 1 mm visible at 10× magnification; cured thickness is within ±10% of the target from the repair plan; lab log entry is complete with resin mix ratios, pot life, vacuum readings, and cure time—all three criteria must be met to pass.
4Core Replacement in Sandwich Panels14labStudents will remove deteriorated balsa or foam core from a pre-damaged sandwich panel section, install and bond new core material, restore the inner skin laminate, and verify bond quality by tap test before final inspection.
  1. Instructor demonstrates the sequence for a deck core repair: marking the repair perimeter, cutting the outer skin with an oscillating tool or router set to skin depth, removing the outer skin flap, excavating and discarding all wet or rotted core with chisels and scrapers, drying the cavity with heat gun if needed, and fitting replacement end-grain balsa or closed-cell PVC foam with a template.
  2. Students perform the full core removal and replacement sequence on assigned pre-damaged sandwich panels; they mix a thickened epoxy adhesive (with colloidal silica or low-density filler per TDS) to a peanut-butter consistency, bed the new core, apply weight or vacuum pressure, and allow full cure before re-laminating the skin.
  3. After core bond cure, students lay up the inner skin plies to match the original schedule (confirmed from the repair plan), apply peel ply, and tap-test the entire repaired area after cure; defective spots are marked, and students discuss remediation steps with the instructor before the panel is submitted for grading.
Pre-damaged sandwich panels with balsa and foam core, oscillating multi-tool, router with depth stop, chisels, scrapers, heat gun, end-grain balsa sheets, closed-cell PVC foam (Divinycell or equivalent), epoxy adhesive kits, colloidal silica and low-density fillers, gram scale, mixing cups, brushes, peel ply, sandbag weights, vacuum equipment (optional), tap-testing mallets, digital calipers, PPE as in Lesson 2, ABYC composite repair referencePost-cure tap test of the entire repaired zone produces a solid ring throughout with no hollow areas; core-to-skin bond line is visible and continuous on at least one cross-section coupon taken from the panel edge—pass requires passing tap test AND visible continuous bond line.
5Osmotic Blister Treatment and Barrier Coat Application10demoStudents will describe the chemistry of osmotic blistering, correctly execute the blister-opening, washing, drying, and epoxy barrier coat application sequence on a prepared hull section, and explain why each step is necessary.
  1. Illustrated lecture on osmotic blistering: hydrolysis of polyester laminate, role of water-soluble glycols, pH of blister fluid, why below-waterline hull sections are most affected, and how long drying times affect successful barrier coats; students complete a guided reading from ACMA CCT reference and answer five written comprehension questions.
  2. Instructor demonstrates opening blisters with a grinder or drill, flushing cavities with clean water, testing blister fluid pH with test strips, and recording findings; students practice on a blister-seeded sample panel, opening, flushing, and logging pH and blister count per square foot.
  3. Students apply two coats of a two-part epoxy barrier system (mixing per TDS, applying at correct interval) to their dried, ground panels using rollers; they record wet-film thickness with a wet-film gauge and compare to the TDS target range, then photograph and document each step in their lab log.
Blister-seeded fiberglass panels, angle grinders, pH test strips, clean water and brushes for flushing, two-part epoxy barrier coat system, foam rollers and brush applicators, wet-film thickness gauges, mixing cups and sticks, gram scale, heat lamp or dehumidifier for drying demonstration, pH meter (optional), PPE as in Lesson 2, manufacturer TDS for barrier coat productStudents answer five comprehension questions with a minimum score of 80%; wet-film gauge readings on both coats are within the TDS target range (±15%); lab log entry documents pH readings, drying time, and application steps—all three criteria must pass.
6Cosmetic Repair: Gelcoat Patching, Fairing, and Polishing14labStudents will apply a catalyzed gelcoat patch to a repaired panel, fair the surface with filler and sandpaper progression, and wet-sand and buff to a gloss reading within 15 gloss units of the surrounding original surface as measured by a gloss meter.
  1. Instructor demonstrates gelcoat color matching using tint pastes, catalyzation calculation for MEKP (within the manufacturer's recommended percentage range at ambient temperature), brush-and-spray-can application, and wax-additive use for surface cure; students practice catalyzation math on a worksheet using three different batch sizes and temperatures.
  2. Students mix, catalyze, and apply gelcoat patch by brush to their repaired panels in two or three thin coats, applying wax-surface agent on the final coat; after cure they block-sand through 80, 120, 220, 320, 400, 600, and 800 grit using a hard block, checking for low spots with a straight edge and guide coat (dry aerosol black).
  3. Students finish with 1500 and 2000 wet-and-dry paper, then machine-polish with a dual-action orbital polisher using compound and finishing glaze; gloss is measured at five points with a 60° gloss meter; results are recorded in the lab log and compared to adjacent original gelcoat readings.
Gelcoat (pigmented polyester or vinyl ester), MEKP catalyst, color tint pastes, wax surface agent (PVA or styrene wax), brushes, mixing cups and sticks, gram scale, sandpaper in grits 80–2000, hard backing blocks, guide coat aerosol, 60° gloss meter, dual-action orbital polisher, polishing compound, finishing glaze, polishing pads, PPE including nitrile gloves, safety glasses, respirator for styrene vapor (organic-vapor cartridge), ACMA CCT referenceGloss meter reading at all five measurement points is within 15 gloss units of the adjacent original surface; surface is flat across a 12-inch straightedge with no visible low spots when a guide coat is applied—both criteria must be met to pass.
7Shop Safety, Hazard Communication, and Repair Documentation7theoryStudents will locate and correctly interpret Safety Data Sheets for all resins and solvents used in the course, demonstrate a lockout/tagout procedure on shop equipment, and assemble a complete professional repair documentation package for a previous lab repair.
  1. Tabletop SDS drill: instructor assigns each student a different resin or solvent used in the course; students locate the SDS in the shop binder and online, then complete a structured worksheet identifying the product's GHS hazard class, required PPE, exposure limits, first-aid measures, and disposal requirements per OSHA Hazard Communication (29 CFR 1910.1200 general standard); results are discussed as a group.
  2. Hands-on lockout/tagout exercise: instructor explains the OSHA control of hazardous energy standard requirements; students take turns applying lockout devices to the angle grinder circuit breaker and the vacuum pump electrical panel, tag the point, verify zero-energy state, and sign off in a simulated LOTO log; instructor evaluates each student individually.
  3. Documentation assembly: using a provided professional repair order template, students compile the complete paperwork package for one of their earlier lab repairs—damage assessment report, repair plan, material mix records (resin batch, ratio, pot life), quality inspection results (tap test, thickness, gloss), and SDS references—then peer-review a classmate's package against a checklist before submission.
SDS binders for all course chemicals (polyester, vinyl ester, epoxy, MEKP, acetone, gelcoat, barrier coat), OSHA Hazard Communication standard reference (29 CFR 1910.1200), lockout/tagout devices (padlocks, hasps, tags), repair order template, peer-review checklist, computers or tablets for online SDS lookup, ABYC Composite Boat Builder study guideSDS worksheet is scored against answer key—minimum 80% correct; LOTO demonstration is evaluated pass/fail by instructor (pass requires all energy isolation steps in correct order with no prompting); documentation package is scored against checklist—minimum 75% of required items present and accurate—all three sub-checks must pass.
Assessments
AssessmentTypeWeightPass standardMethod & rubric
Repair Theory Knowledge ExamWritten exam25%Minimum score of 75% (38 out of 50 questions correct)A 50-question written exam covering damage diagnosis, resin system chemistry, laminate schedule selection, core repair theory, osmotic blister treatment, gelcoat catalyzation, and OSHA hazard communication, mapped to ABYC Composite Boat Builder and ACMA CCT exam content areas. Questions are multiple choice and short answer; students have 90 minutes to complete the exam.
Standard met · Safety · Time · Quality/finish · Documentation
Structural Patch Repair Skills DemonstrationSkills demonstration45%All four rubric categories scored at least 2 out of 3; no category scored 0Each student independently repairs an instructor-assigned damaged fiberglass panel from scratch—assessing damage, preparing the substrate, laminating a vacuum-bagged patch, and finishing with gelcoat—while an instructor evaluates using a four-category rubric: surface preparation quality, laminate void content (cross-section inspection), dimensional accuracy of patch thickness, and gelcoat gloss match. The demonstration is completed within one scheduled lab session.
Standard met · Safety · Time · Quality/finish · Documentation
Repair Lab Log PortfolioLog15%Minimum 75% of required entries present, complete, and accurate as scored on the portfolio rubricStudents submit their cumulative lab log from all seven lessons, which must include dated entries for every lab exercise containing: damage classification notes, repair plans, resin mix ratios and pot-life records, vacuum gauge readings, tap-test results, thickness measurements, gloss meter readings, and SDS references for every chemical used. Completeness, accuracy, and professional legibility are scored against a published rubric.
Standard met · Safety · Time · Quality/finish · Documentation
Safety Compliance CheckSafety audit15%Pass/Fail — all critical items must be satisfactory; any single critical failure results in immediate remediation before the student may continueAn unannounced or scheduled 15-minute observation in which the instructor evaluates each student against a safety checklist covering: correct PPE selection and donning for the task in progress, proper chemical storage and labeling, accurate SDS location within 60 seconds, and correct execution of the lockout/tagout procedure on one designated piece of equipment. Critical items include respiratory protection selection and LOTO steps; all critical items must be performed correctly without prompting to pass.
Standard met · Safety · Time · Quality/finish · Documentation
MFG-COMP18-07 Capstone

Capstone Project: Integrated Composite Boat Component Build

108 hr · $1,080 COMPLIMENTARY

Students plan, fabricate, finish, and document a full-scale composite boat component or small vessel subassembly—such as a hatch, console panel, or hull section—using mold preparation, hand layup or vacuum infusion, gelcoat finishing, and repair techniques learned across the program. The capstone integrates trade math, material selection, quality inspection, and safety compliance into one documented build sequence culminating in a formal oral defense before an industry evaluator. Lesson work is mapped to ABYC Composite Boat Builder and ACMA Certified Composites Technician (CCT) exam domains including process knowledge, materials identification, quality control, and safety.

Outcomes
Course text

Students plan, fabricate, finish, and document a full-scale composite boat component or small vessel subassembly—such as a hatch, console panel, or hull section—using mold preparation, hand layup or vacuum infusion, gelcoat finishing, and repair techniques learned across the program. The capstone integrates trade math, material selection, quality inspection, and safety compliance into one documented build sequence culminating in a formal oral defense before an industry evaluator. Lesson work is mapped to ABYC Composite Boat Builder and ACMA Certified Composites Technician (CCT) exam domains including process knowledge, materials identification, quality control, and safety.

How the course runs. 4 blocks: Project Planning, Material Selection, and Build Documentation Setup; Mold Preparation, Layup, and Infusion Fabrication; Gelcoat Finishing, Defect Repair, and Final Inspection; Portfolio Completion and Project Defense.

What competent looks like. Develop and execute a written build plan for a composite boat component that specifies materials, layup schedule, cure parameters, and quality hold points consistent with ABYC and ACMA standards. Fabricate a structurally sound composite part using at least two processes (e.g., wet layup and vacuum bag or infusion) and demonstrate correct fiber orientation, resin-to-glass ratio, and void-free consolidation. Apply gelcoat and finish the part to a surface quality acceptable for marine service, measured against industry color and gloss standards. Inspect the finished part using visual, tap-test, and template methods; document any defects and execute and record a repair that restores structural and cosmetic integrity. Assemble a project portfolio that includes a build plan, material safety data sheets (SDS), inspection records, photographic log, and a completed quality-control checklist traceable to ABYC and ACMA exam content areas. Present and defend the completed project and portfolio before an evaluator, demonstrating the ability to explain process decisions, safety measures, and quality outcomes in trade-appropriate language.

Lessons · 4 blocks
#LessonHrTypeObjectiveActivitiesMaterialsCheck
1Project Planning, Material Selection, and Build Documentation Setup20theoryGiven a project brief for a specified marine composite component, the student will produce a complete written build plan that identifies materials, laminate schedule, process sequence, PPE and ventilation requirements, and quality hold points, with all entries traceable to SDS and relevant ABYC or ACMA reference material.
  1. Students receive a standardized project brief (e.g., a 24-inch by 36-inch fiberglass hatch cover with a nonskid gelcoat surface) and individually draft a bill of materials listing resin system, reinforcement type and weight, core material if applicable, release agent, and gelcoat, calculating estimated resin volume using the fiber-to-resin ratio formula reviewed in the Layup course.
  2. In pairs, students critique each other's laminate schedules using the ACMA CCT study guide's process knowledge section and the ABYC composite boat building reference, checking that fiber orientations, number of plies, and expected finished thickness are consistent with the structural intent described in the brief, then revise their own documents accordingly.
  3. Each student sets up a physical project binder and a corresponding digital folder containing: the signed build plan, SDS for every chemical they will use, a blank photographic log template with labeled checkpoints, and a quality-control checklist adapted from ABYC composite inspection criteria; the instructor reviews and signs off on the plan before fabrication begins.
Project brief handout, ABYC Composite Boat Building reference manual, ACMA CCT candidate guide, SDS for polyester or vinyl ester resin, glass fabric, core material, gelcoat, and release agent; calculator, laminate-thickness worksheet, project binder, digital folder on shop computer or tablet, pen and highlightersInstructor reviews each student's completed build plan against a 12-item rubric covering: bill of materials completeness, correct resin calculation (within 5% of instructor answer key), appropriate layup schedule, identified hold points, PPE and ventilation plan, and SDS inclusion. Passing standard: 10 of 12 items satisfactory; any safety-critical item (PPE, SDS, ventilation) missing requires revision before the student proceeds to fabrication.
2Mold Preparation, Layup, and Infusion Fabrication48labFollowing the approved build plan, the student will prepare a mold, execute the laminate using at least two processes (wet hand layup and vacuum bag consolidation or resin infusion), and produce a cured part with no dry spots, no bridging at corners, and a fiber-to-resin ratio within the range specified in the build plan.
  1. Students prepare the mold surface over two class sessions: clean and inspect for defects, apply mold release wax or semi-permanent release agent per the manufacturer's technical data sheet, and spray or brush gelcoat in two cross-directed passes to the target wet-film thickness verified with a wet-film gauge; the instructor and student record a photographic log entry at each step and complete the first three quality hold-point sign-offs in the project binder.
  2. Students cut reinforcement fabric to pattern according to the approved fiber-orientation schedule, wet out successive plies using a chip brush and consolidation roller for the hand layup section of the laminate, monitoring resin pot life and ambient temperature; after the wet layup plies are tacked, students apply peel ply, flow media (if infusing), and bag film—sealing with tacky tape, connecting infusion or vacuum lines, and drawing the bag to the target vacuum level verified on a calibrated gauge—then monitor bag integrity and resin flow until full wet-out is confirmed.
  3. After a full cure at shop ambient conditions (or post-cure per the resin manufacturer's data sheet), students demold the part, trim edges with a cutoff wheel or die grinder wearing a half-face respirator with organic-vapor/P100 combination cartridges, safety glasses, and hearing protection, then tap-test the entire surface with a coin and mark any suspect areas with painter's tape, recording findings in the quality-control checklist before proceeding to finish.
Plug or production mold (tool matched to project brief), mold release wax or semi-permanent release agent, gelcoat, 1.5-oz chopped-strand mat and woven roving or biaxial fabric per schedule, vinyl ester or polyester resin, MEKP catalyst, infusion resin if applicable, vacuum bag film, tacky tape, peel ply, flow media, infusion lines and fittings, vacuum pump, calibrated vacuum gauge, wet-film gauge, consolidation rollers, chip brushes, peel-ply burnishing tool, cutoff wheel, die grinder, half-face respirator with OV/P100 cartridges, nitrile gloves, Tyvek suit, safety glasses, hearing protection, tap-test coin, painter's tape, photographic log, project binderInstructor performs a structured part inspection at demolding using a standardized inspection sheet: visual check for dry areas, bridging, and print-through; tap-test map recorded on a part outline sketch; cross-section measurement at three locations compared to the target thickness in the build plan (within ±10%); bag-log review confirming vacuum held within specification throughout infusion. Passing standard: zero untreated dry spots greater than 1 square inch, zero delaminated areas confirmed by tap test, thickness within tolerance at all three measurement points, and all hold points in the project binder signed off. Any failing item must be remediated or documented as a repair task in Lesson 3.
3Gelcoat Finishing, Defect Repair, and Final Inspection28practiceThe student will finish the cured composite part to a marine-grade surface quality by wet-sanding, compounding, and polishing gelcoat to a uniform gloss, identify and repair any structural or cosmetic defects using techniques from the Repair course, and complete a final inspection record that documents the part as acceptable or describes remaining limitations.
  1. Students wet-sand the gelcoat surface in a graduated sequence (beginning at an appropriate grit for the surface condition, progressing through finer grits) using a sanding block on flat areas and a flexible pad on curves, keeping the surface wet throughout; they then machine-compound and hand-polish to a consistent gloss, using a gloss meter or side-light comparison against an approved reference panel, and record before-and-after photographs in the photographic log.
  2. Students use the tap-test findings from Lesson 2 to locate any voids or delaminations and execute the appropriate repair: grinding out the defect with a right-angle grinder fitted with a flap disc, laminating in replacement plies wet-and-dry or using a pre-wetted patch consistent with the original laminate schedule, then finishing flush; cosmetic pinholes or crazing in the gelcoat are filled using pigmented polyester paste, feathered, sanded, and polished to match; all repairs are documented on a repair log with before, during, and after photographs.
  3. Using a mirror, strong side light, and the final inspection checklist adapted from ABYC quality-control criteria, students perform a complete self-inspection of the finished part, scoring each criterion (surface gloss, color match, edge finish, dimensional conformance, absence of print-through), then exchange parts with a classmate for a second independent inspection; discrepancies between the two evaluations are discussed with the instructor before the final checklist is countersigned.
Wet-dry sandpaper in multiple grits, sanding blocks, flexible sanding pads, random-orbital polisher, compound, polish, microfiber cloths, gloss meter or reference panel, right-angle grinder with flap disc, die grinder, woven roving or biaxial fabric scraps, resin, MEKP catalyst, pigmented gelcoat paste, acetone for cleanup, half-face respirator with OV/P100 cartridges, nitrile gloves, safety glasses, hearing protection, repair log template, final inspection checklist, photographic logInstructor and a second qualified evaluator (lead instructor or industry mentor) independently score the finished part using the same 15-item final inspection checklist covering surface gloss uniformity, absence of uncorrected dry spots or delaminations, edge finish, dimensional conformance, and repair quality. Passing standard: a score of 12 of 15 items rated acceptable by both evaluators, with zero safety-critical structural defects (untreated delaminations or exposed dry glass) remaining; any part failing the structural items must be remediated before the oral defense.
4Portfolio Completion and Project Defense12fieldThe student will assemble and submit a complete project portfolio and present a 15-to-20-minute oral defense of the build process, quality decisions, and safety practices before an evaluator panel, answering questions drawn from ABYC Composite Boat Builder and ACMA CCT exam domains.
  1. Students organize their project binder and digital folder into a final portfolio with clearly labeled sections: build plan, bill of materials and cost summary, photographic build log with captions at each hold point, SDS index, quality-control and repair checklists with all signatures, and a one-to-two-page reflection memo identifying one process change they would make and why; the instructor reviews the portfolio for completeness using a submission checklist before the defense date is confirmed.
  2. Each student delivers a structured 15-to-20-minute presentation to a panel of at least two evaluators (lead instructor plus one industry or program advisor) using the finished part and the portfolio as supporting evidence; the presentation follows a required outline: project objective, material selection rationale, process sequence with safety measures, quality-control findings, repairs performed, and final evaluation outcome, with the physical part on the table for hands-on examination during the session.
  3. Evaluators conduct a 10-minute question period drawing from ABYC Composite Boat Builder exam domains (materials, processes, safety, quality) and ACMA CCT exam domains (process knowledge, materials identification, safety and health, quality control); questions are scored on a standard rubric assessing accuracy of trade knowledge, clarity of explanation, and professional communication; students receive written evaluator feedback within one class day.
Completed project portfolio (binder and digital copy), finished composite part, laptop or tablet for digital display if needed, oral defense rubric, evaluator question bank drawn from ABYC and ACMA study guides, whiteboard or flip chart for sketching during responsesPortfolio scored against a 10-item submission checklist (all sections present and complete); oral defense scored by both evaluators using a shared rubric with four domains—technical accuracy, process rationale, safety knowledge, and professional communication—each rated on a 4-point scale (maximum 16 points). Passing standard: portfolio checklist complete (10 of 10 items), oral defense score of 12 of 16 with no domain rated 0; a student who does not pass on the first attempt may revise the portfolio or repeat the defense once within the course window.
Assessments
AssessmentTypeWeightPass standardMethod & rubric
Finished Composite Part — Capstone Project EvaluationProject60%Score of 12 of 15 items rated acceptable on the final inspection checklist by two independent evaluators, with zero untreated structural defects remaining in the finished part.Evaluators physically inspect the student's completed composite boat component against a standardized 15-item checklist covering laminate integrity (tap test and visual), gelcoat surface quality (gloss, color uniformity, absence of pinholes), edge and trim finish, dimensional conformance to the project brief, and the quality of any repairs performed. The part must meet marine-grade surface and structural standards consistent with ABYC composite boat building criteria.
Meets specification · Within estimate · Workmanship · Safety · Documentation
Project PortfolioPortfolio20%All 10 required sections present and complete per the submission checklist, signed off by the instructor before the oral defense date.The portfolio documents the full build cycle: approved build plan with laminate calculations, bill of materials, photographic log with captioned hold-point entries, SDS index for all chemicals used, signed quality-control and repair checklists, and a written reflection memo. It serves as evidence of the student's ability to plan, document, and critically evaluate a composite fabrication project in a format consistent with professional shop documentation practice.
Completeness · Organization · Evidence quality
Oral DefenseOral / panel20%Score of 12 of 16 on the evaluator rubric with no domain rated 0, assessed by a panel of at least two evaluators.In a 25-to-30-minute session, the student presents the project and answers evaluator questions drawn from ABYC Composite Boat Builder and ACMA CCT exam domains including materials identification, process knowledge, safety and health practices, and quality control. The rubric scores technical accuracy, process rationale, safety knowledge, and professional communication; written feedback is returned to the student within one class day and is used to guide study in the subsequent Certification Exam Preparation course.
Explains decisions · Answers technical questions · Professional communication
MFG-COMP18-08 Externship / clinical

Externship / Worksite Placement

162 hr · $650 COMPLIMENTARY

Students complete 162 supervised hours at a marine composites employer — a boatyard, production boat manufacturer, or composites repair shop — performing real production and repair tasks under a journeyman or lead technician. A credentialed site supervisor evaluates performance on safety practices, layup quality, vacuum infusion, gelcoat work, and professional conduct using a standardized employer rubric. This field experience bridges classroom skill and industry expectation, satisfying the applied-hours component recognized by ABYC and ACMA credentialing frameworks.

Outcomes
Course text

Students complete 162 supervised hours at a marine composites employer — a boatyard, production boat manufacturer, or composites repair shop — performing real production and repair tasks under a journeyman or lead technician. A credentialed site supervisor evaluates performance on safety practices, layup quality, vacuum infusion, gelcoat work, and professional conduct using a standardized employer rubric. This field experience bridges classroom skill and industry expectation, satisfying the applied-hours component recognized by ABYC and ACMA credentialing frameworks.

How the course runs. 4 blocks: Pre-Placement Orientation and Site Safety Briefing; Supervised Production Tasks — Weeks 1 through 3; Advanced Worksite Tasks and Independent Contribution — Weeks 4 through 6; Final Employer Evaluation, Exit Report, and Professional Debrief.

What competent looks like. Perform assigned production or repair tasks — including wet layup, vacuum bagging, gelcoat application, or structural repair — to the quality standard accepted by the host employer without rework. Demonstrate consistent compliance with host-site safety rules, PPE requirements, and hazard communication protocols throughout all 162 worksite hours. Document daily work activities, materials used, and lessons learned in a professional externship log that meets program recordkeeping standards. Receive a passing employer evaluation score on all rated competency domains — safety, technical skill, communication, and professionalism — at the conclusion of the placement. Identify at least two ways the worksite's quality-control or inspection practices connect to ABYC or ACMA composites standards studied in the program. Reflect on career goals and next steps in a written exit report that references specific worksite experiences and industry credential pathways.

Lessons · 4 blocks
#LessonHrTypeObjectiveActivitiesMaterialsCheck
1Pre-Placement Orientation and Site Safety Briefing9fieldBefore the first production shift, the student will complete the host employer's site-specific safety orientation, review emergency procedures, and demonstrate correct PPE selection for the hazards present at that facility.
  1. Attend the employer's new-worker safety orientation; complete any required site paperwork including emergency contact forms, hazard communication acknowledgment, and tool authorization sign-offs.
  2. Walk the facility with the site supervisor to identify hazard zones — resin mixing areas, spray booths, laminating bays, compressed-air lines, electrical panels — and locate fire extinguishers, eyewash stations, first-aid kits, and emergency exits.
  3. Complete a written site safety map and PPE selection checklist, noting the specific respiratory protection, glove type, and eye protection required for each work area encountered during the walkthrough; review the list with the supervisor and make corrections before shift one begins.
Host-employer safety orientation packet, SDS binder for resins and solvents on site, facility floor plan, blank site safety map template (program-supplied), PPE checklist form, OSHA Hazard Communication standard summary card.Site supervisor confirms in writing on the program orientation sign-off form that the student can correctly name the PPE required for each assigned work area and has located all emergency resources; no unsupervised work begins until sign-off is complete — this is a binary pass/fail gate.
2Supervised Production Tasks — Weeks 1 through 360labThe student will complete assigned production or repair tasks — drawn from layup, infusion, gelcoat, trimming, or fitting — meeting the employer's acceptance criteria on at least 80 percent of evaluated work pieces during the first three weeks of placement.
  1. Work alongside the assigned journeyman or lead technician on daily production assignments; tasks may include wet layup in open molds, vacuum bag assembly, gelcoat spray or brush application, grinding and fairing, or structural bonding — depending on the employer's current production schedule.
  2. At the end of each shift, record in the externship daily log: task performed, materials and mix ratios used, any quality issues encountered and how they were resolved, and one connection to a program standard or ABYC/ACMA exam topic; logs must be completed before leaving the site.
  3. At the mid-point of weeks 1–3 (approximately hour 40), meet with the site supervisor for a brief verbal check-in; review at least two work samples together, discuss any quality or safety concerns, and set a specific improvement goal for the remaining days of this phase.
Host employer's tools, molds, resin systems, reinforcement materials, and QC inspection gauges; program-supplied externship daily log forms; site supervisor mid-point feedback form; ABYC and ACMA composites standards summaries (student reference copies).Site supervisor completes the program's mid-point rating form using a 4-point scale (1 = does not meet standard, 4 = exceeds standard) across five domains: safety compliance, technical execution, material handling, communication, and professionalism; student must average 2.5 or above across all domains to continue unsupervised on current task types — a score below 2.5 in any single domain triggers a documented remediation plan.
3Advanced Worksite Tasks and Independent Contribution — Weeks 4 through 675fieldThe student will perform increasingly independent production or repair tasks, demonstrating reduced reliance on direct supervisor instruction and achieving the employer's first-pass quality acceptance rate on at least 85 percent of evaluated outputs during weeks 4 through 6.
  1. Take on at least one task with increased complexity or responsibility — such as leading a vacuum infusion setup, mixing and applying a spray gelcoat sequence start to finish, or performing a structural repair that requires laminate schedule documentation — with the supervisor available but not directing each step.
  2. Continue daily log entries; beginning in week 4, each log entry must also include a 2–3 sentence quality reflection: what was accepted, what was rejected or reworked, and what the student would do differently — these reflections form the raw material for the exit report.
  3. Observe or participate in at least one employer quality-control inspection, customer vessel survey, or production meeting; document what inspection criteria were used, how defects were recorded, and how those criteria relate to ABYC standards the student has studied; bring notes to the program coordinator's site visit if one is scheduled.
Host employer's production tools and materials; vacuum infusion consumables as applicable; spray or brush gelcoat equipment; externship daily log forms; quality-reflection entry template (program-supplied); employer QC inspection records (reviewed on site, not removed).Site supervisor records an informal daily acceptance / rework tally for the student's outputs; at the end of week 6, the coordinator or instructor reviews the tally — student must show an 85 percent or better first-pass acceptance rate on evaluated pieces; any week in which the rate falls below 70 percent triggers a same-week check-in between the student, supervisor, and program instructor.
4Final Employer Evaluation, Exit Report, and Professional Debrief18theoryThe student will submit a complete externship log, receive and discuss the final employer evaluation, and deliver a written exit report that connects specific worksite experiences to ABYC and ACMA credential competencies and to the student's near-term career plan.
  1. Compile the full externship daily log — all shifts from orientation through week 6 — organizing entries chronologically, verifying that all required fields are filled, and attaching any annotated photos or sketches permitted by the employer; submit the log to the program instructor for review.
  2. Meet with the site supervisor for the final employer evaluation conference: the supervisor completes the program's summative evaluation rubric (5 domains, 4-point scale); student listens actively, asks at least two clarifying questions, and records the supervisor's suggestions verbatim in the debrief notes section of the log.
  3. Write a 600–900 word exit report structured in four sections — (1) summary of tasks performed, (2) two or more specific connections between worksite practices and ABYC or ACMA exam topic areas, (3) skills still needing development, and (4) a concrete three-step career action plan including credential exam registration intent; submit to the instructor within five business days of the final shift.
Completed externship daily log binder; program summative employer evaluation rubric; exit report template with section prompts; ABYC Composite Boat Builder and ACMA CCT exam topic outlines (for cross-referencing); word processor or pen and lined paper.Instructor scores the exit report on a 3-criterion rubric — accuracy and completeness of log (all shifts recorded with no blank required fields), quality of credential-to-practice connections (at least 2 specific and accurate references to ABYC or ACMA content areas), and clarity of career plan (concrete and actionable steps named) — each criterion scored 1–4; minimum passing score is 9 of 12; final employer evaluation must also show an overall average of 2.5 or higher on the summative rubric or the student does not pass the externship course.
Assessments
AssessmentTypeWeightPass standardMethod & rubric
Summative Employer Skills EvaluationSkills demonstration70%Overall average of 2.5 or higher (on a 4-point scale) across all five domains — safety compliance, technical skill, material handling, communication, and professionalism — with no single domain rated below 2.0 on the final evaluation form.The host-site supervisor completes the program's standardized summative evaluation rubric at the conclusion of the placement, rating the student across five workplace competency domains based on direct observation of performance over 162 hours. This skills demonstration assessment is the primary evidence that the student has met industry-level performance expectations in a live production or repair environment, connecting directly to the applied-competency requirements underlying both the ABYC Composite Boat Builder and ACMA CCT credentials.
Competency · Safety · Attendance · Conduct · Initiative
Externship Log and Exit ReportLog30%Combined rubric score of 9 out of 12 points (3 criteria, each scored 1–4): all required log entries complete and accurate, at least two specific and correct connections made between worksite practices and ABYC or ACMA exam content areas, and a concrete career action plan included in the exit report.The student submits a complete shift-by-shift externship log covering all 162 placement hours, accompanied by a 600–900 word exit report that analyzes the experience through the lens of professional credentials and career development. The instructor evaluates both documents together as a lab-log assessment, confirming that the student can observe, record, and critically reflect on real trade work at the level expected by industry and by the credentialing bodies whose exams follow in Course 9.
Complete · Verified
MFG-COMP18-09 Exam prep

Certification Exam Preparation: ABYC Composite Boat Builder & ACMA CCT

45 hr · $450 COMPLIMENTARY

Students systematically review every domain tested on the ABYC Composite Boat Builder and ACMA Certified Composites Technician (CCT) exams, identify and close individual knowledge gaps, and sit timed, full-length mock exams under realistic testing conditions. Instruction is mapped directly to published exam content outlines for both credentials so no testable area is left unaddressed.

Outcomes
Course text

Students systematically review every domain tested on the ABYC Composite Boat Builder and ACMA Certified Composites Technician (CCT) exams, identify and close individual knowledge gaps, and sit timed, full-length mock exams under realistic testing conditions. Instruction is mapped directly to published exam content outlines for both credentials so no testable area is left unaddressed.

How the course runs. 4 blocks: Diagnostic Assessment & Exam Blueprint Orientation; Domain Deep-Dive: Materials, Laminates, Processes & Standards; Applied Problem-Solving & Exam Strategy; Full Mock Certification Exams.

What competent looks like. Demonstrate mastery of ABYC and ACMA CCT exam content domains — including materials science, laminate design, process methods, safety, and quality — by scoring at or above each credential's minimum passing standard on practice assessments. Apply trade mathematics (unit conversion, weight-per-area calculations, resin-to-reinforcement ratios, cure exotherm estimation) accurately and without aids, as required on closed-book exam sections. Interpret ABYC standards language, ACMA technical references, Safety Data Sheets, and laminate schedules to answer standards-based exam questions correctly. Execute a personal exam-readiness plan that schedules study sessions, targets weak domains identified through diagnostic scoring, and meets required credential application deadlines. Perform timed mock exams for both credentials, completing all items within the allotted time while maintaining accuracy consistent with a passing score. Explain the credential maintenance, recertification, and professional development requirements for both the ABYC Composite Boat Builder and ACMA CCT credentials.

Lessons · 4 blocks
#LessonHrTypeObjectiveActivitiesMaterialsCheck
1Diagnostic Assessment & Exam Blueprint Orientation8theoryStudents will map their current knowledge against the published content domains of both the ABYC Composite Boat Builder and ACMA CCT exams and produce a written personal study plan that targets domains scored below passing.
  1. Complete a 60-question diagnostic practice test drawn proportionally from all content domains of both credential exams; instructor scores immediately and returns a domain-by-domain breakdown to each student.
  2. Side-by-side comparison exercise: students annotate a two-column chart listing ABYC exam domain areas (materials, processes, structural design, safety, quality) alongside ACMA CCT content areas, noting overlaps and unique topics — then mark their diagnostic scores in each cell.
  3. Individual study plan workshop: each student drafts a written plan identifying their three lowest-scoring domains, lists specific ABYC standards sections and ACMA technical references to review, and schedules study blocks across the remaining course weeks — plan is reviewed and signed off by instructor.
Diagnostic practice-question bank (instructor-developed, aligned to published exam blueprints), ABYC Composite Boat Builder exam content outline (ABYC member resource), ACMA CCT Candidate Handbook, highlighters, two-column comparison worksheet, personal study plan templateStudent submits a completed personal study plan with domain scores entered and at least three targeted remediation actions per weak domain; plan must be realistic and instructor-approved before Lesson 2 begins — pass = all required fields complete and instructor sign-off obtained.
2Domain Deep-Dive: Materials, Laminates, Processes & Standards18theoryStudents will correctly answer exam-style questions on composite materials properties, laminate design principles, wet layup and vacuum infusion processes, gelcoat application, and applicable ABYC standards by achieving at least 75 percent on domain quizzes administered at the end of each session.
  1. Rotating station reviews (six stations, 45 minutes each over multiple days): Resins & Reinforcements — identify fiber types, weave styles, resin systems, and cure chemistry using SDS and product data sheets; Laminate Design & Structural Calculations — practice weight-per-area, fiber volume fraction, and core thickness calculations using trade math; Vacuum Infusion & Process Controls — sequence infusion steps, troubleshoot void and dry-spot scenarios using case-study photographs; Gelcoat & Surface Finishing — match defect descriptions to causes and corrections; Repair Methodology — classify damage, select repair approach, and justify using ABYC standards language; Safety, Regulatory & Quality — answer questions on OSHA requirements, ventilation standards, PPE selection, first-aid response to styrene and epoxy exposure, and ISO/ABYC quality checkpoints.
  2. Standards-language decoding drill: instructor projects actual ABYC standard excerpts (general wording, not specific section numbers); students work in pairs to identify the requirement, determine whether a described boat condition meets or violates it, and write a one-sentence justification — debrief follows each item.
  3. Flashcard sprint and peer quiz: students create a set of at least 40 trade-term flashcards covering vocabulary from both exam blueprints, then partner-quiz each other under a two-minute-per-card time pressure to build recall speed needed for timed exams.
ABYC standards library (school subscription), ACMA CCT Study Guide, manufacturer technical data sheets for common resin systems (epoxy, vinyl ester, polyester), SDS for styrene and common hardeners, laminate calculation worksheets, domain-quiz question bank, case-study defect photo sets, blank index cards for flashcardsFive domain quizzes of 20 questions each administered at the close of each major topic block; students must score at least 75 percent (15/20) on each quiz — any domain scored below 75 percent triggers a mandatory 30-minute targeted re-study session before the next lesson begins.
3Applied Problem-Solving & Exam Strategy10demoStudents will apply elimination strategies, time-management techniques, and keyword recognition to correctly answer complex, scenario-based exam questions drawn from all domains at a rate consistent with each credential's passing standard within the allotted time per item.
  1. Instructor-led worked examples: instructor displays 15 challenging scenario-based questions (the type that describe a real shop situation and ask the student to select the best action or identify the code-compliant approach), thinks aloud through the elimination process for each, then students repeat the process independently on 15 parallel items — class discusses rationale for correct and incorrect choices.
  2. Time-boxing drill: students are given a mixed 40-question set and must allocate no more than 90 seconds per question, flag uncertain items, return to them, and submit within the total allotted window — instructor debriefs pacing errors and demonstrates how spending too long on one item undermines overall performance.
  3. Credential logistics and application walkthrough: instructor walks through the current ABYC and ACMA candidate application processes (eligibility documentation, scheduling, acceptable ID, testing-center rules, score reporting, and credential maintenance requirements) using the current candidate handbooks — students complete a checklist confirming they have gathered all required application materials.
Scenario-based question bank (instructor-developed), timer or stopwatch, ABYC Composite Boat Builder Candidate Handbook, ACMA CCT Candidate Handbook, application-readiness checklist, pencils, scratch paperStudents complete the 40-question timed drill and debrief form indicating questions flagged and final answers; instructor reviews pacing log — pass = student finishes all 40 items within the time window and scores at least 70 percent, demonstrating readiness for the full mock exam.
4Full Mock Certification Exams9labStudents will complete full-length, timed mock exams simulating both the ABYC Composite Boat Builder and ACMA CCT exams under closed-book, proctored conditions and achieve a score at or above each credential's published minimum passing standard.
  1. ABYC Composite Boat Builder mock exam: administered under proctored, closed-book, timed conditions matching the format described in the current ABYC candidate handbook — instructor acts as proctor, enforces time limits and no-communication rules, collects papers at time; results are scored and returned with a domain-by-domain breakdown the same day.
  2. ACMA CCT mock exam: administered in the same proctored format on the same or following day, using a full-length question set aligned to the ACMA CCT content outline — scored and returned with domain breakdown; students compare performance on both exams to their earlier diagnostic scores to confirm growth.
  3. Post-exam debrief and final remediation: whole-class review of the 10 most-missed items from each mock exam — instructor explains the correct answer and underlying principle for each; students who did not reach passing on either mock exam meet individually with instructor to review their domain breakdown and schedule additional targeted practice before sitting the credentialing exam.
ABYC mock exam question set (full length, proportional to published blueprint), ACMA CCT mock exam question set (full length, proportional to published blueprint), proctor sign-in sheet, timer, blank scratch paper, #2 pencils, individual score report template, domain-breakdown scoring rubricEach student must achieve a score at or above the minimum passing standard published by ABYC for the Composite Boat Builder credential and at or above the minimum passing standard published by ACMA for the CCT credential on their respective mock exams — students who fall short on either mock exam receive a written remediation plan and a second mock sitting opportunity within the course hours remaining; readiness for live credentialing exam is confirmed in writing by instructor.
Assessments
AssessmentTypeWeightPass standardMethod & rubric
Dual Credential Mock Examination SuiteMock certification exam100%Score at or above the minimum passing standard published in the current candidate handbook for each credential (ABYC Composite Boat Builder and ACMA CCT) on both full-length mock exams; students who pass both mocks receive instructor sign-off confirming exam readiness.Students sit two full-length, proctored, closed-book mock exams — one aligned to the ABYC Composite Boat Builder content blueprint and one aligned to the ACMA CCT content blueprint — under timed testing conditions that replicate the actual credentialing experience. Scores are reported by domain so students and instructor can confirm readiness before the student schedules and sits the live credentialing exams.
Score · Time management
Program completion

External credential: ABYC Composite Boat Builder; ACMA CCT

Students sit the ABYC Composite Boat Builder examination administered by the American Boat and Yacht Council and the ACMA Certified Composites Technician (CCT) examination administered by the American Composites Manufacturers Association. Pass standard: Credential issued by the body.

Back to Fiberglass / Composites (boatbuilding) · How the school gets authority to award these credentials