Basic Hull Repair Techniques Course
This course gives you the fundamental skills to maintain and restore the structural integrity of boat hulls. You will learn to identify common damage such as osmosis, cracks, delamination and dents and to repair it with fiberglass, epoxy resins and marine fillers, as well as basic repairs on wooden, metal and inflatable hulls, using the right tools and safety procedures to achieve durable, professional results.
Prior knowledge check
These are the skills this program gives you. Tick the ones you already master and we will tell you which part of the syllabus is for you.
You are starting from scratch in this subject. The program is designed precisely for that.
What is the Basic Hull Repair Techniques Course?
This introductory course covers the basic repairs that any boat hull may need, across all the common hull materials. You will study the differences between maintenance, restoration, reinforcement, cosmetic repair and structural repair; the main hull types, from fiberglass and composites to wood, aluminum, steel, inflatables and RIBs; how to diagnose damage by visual inspection, tapping, moisture measurement and interior checks, and when to refer a job to a specialist; tools, materials, surface preparation and safe working conditions; basic fiberglass laminating and repairs, fillers, gelcoat and first-level osmosis treatment; and repairs on wooden, metal, aluminum and inflatable hulls, including the sealing of through-hulls and joints.
What sets this course apart: rather than specializing in one material or one defect, it gives you a broad, practical foundation for the repairs most often needed on leisure and working boats; it teaches clear criteria for deciding between a minor repair, a structural intervention or a specialist referral; it gives real weight to safety with resins, solvents, dust and power tools and to the environmental conditions that affect curing; it ends every repair with a watertightness check and a quality record; and it closes with a project in which you diagnose, plan and document the repair of a real case.
Program highlights
- Diagnosis: damage types, inspection by eye, tapping and moisture meter, and severity criteria.
- Preparation and safety: tools, materials, surface preparation, PPE, ventilation and curing conditions.
- Fiberglass repairs: laminating, patches, fillers, gelcoat, topcoat and basic osmosis treatment.
- Other hulls: repairs on wood, steel, aluminum, inflatables and RIBs.
- Sealing and watertightness: through-hulls, joints, keels, fastenings and areas exposed to chafe.
- Applied project: diagnosis, repair procedure and maintenance plan for a real hull.
Syllabus of the Basic Hull Repair Techniques Course
5 modules. Select a module to see its content.
Fundamentals of hull repair, materials and initial diagnosis
- 1.1. Basic concepts of hull repair and the differences between maintenance, restoration, reinforcement, cosmetic repair and structural repair
- 1.2. Types of hull: fiberglass, wood, aluminum, steel, composites and inflatable or rigid inflatable boats
- 1.3. Common damage: impacts, cracks, abrasion, delamination, osmosis, corrosion, rot, dents and loss of watertightness
- 1.4. Visual inspection, tapping, moisture measurement, interior checks and assessment of the severity of the damage
- 1.5. Criteria for choosing between a minor repair, a structural intervention, renewal of material or referral to a specialist
Tools, surface preparation and safety during repairs
- 2.1. Basic tools: sanders, grinders, spatulas, brushes, rollers, chisels, drills, saws and measuring tools
- 2.2. Repair materials: resins, fillers, fibers, primers, sealants, paints, fastenings and anti-corrosion products
- 2.3. Surface preparation through cleaning, degreasing, sanding, bevelling, drying and removal of damaged material
- 2.4. Workplace safety: respiratory and eye protection, gloves, ventilation and control of dust, solvents, resins and power tools
- 2.5. Environmental conditions: humidity, temperature, salinity, sun exposure, ventilation and curing times
Basic repairs on fiberglass and composite materials
- 3.1. Fundamentals of fiberglass laminating and the relationship between resin, fabric, fiber orientation, thickness and strength
- 3.2. Repair of cracks, impacts, small holes, chips, abrasion and weakened areas of the hull
- 3.3. Preparation of patches, application of layers, wetting out, consolidation, removal of air bubbles and control of overlaps
- 3.4. Use of fillers, gelcoat, topcoat, primers and finishes to restore watertightness and surface appearance
- 3.5. Basic treatment of osmosis, blisters and internal moisture, and preventive protection of fiberglass hulls
Basic repairs on wooden, metal and auxiliary hulls
- 4.1. Repair of wooden hulls: cracks, open seams, rotten parts, sealing, sanding, partial renewal and protection
- 4.2. Repair of metal hulls: corrosion, pitting, dents, minor welds, primers and anti-corrosion protection
- 4.3. Repair of aluminum with criteria of compatibility, galvanic isolation, sealing and corrosion prevention
- 4.4. Repairs on inflatables and RIBs: patches, valves, technical fabrics, adhesives, pressure and airtightness
- 4.5. Sealing of through-hulls, joints, seams, fastenings, keels, corners, reinforcements and areas exposed to chafe
Applied project in basic hull repair
- 5.1. Definition of the case: fiberglass, wooden, aluminum, steel or RIB hull with a localized impact, crack, minor hole or abrasion damage
- 5.2. Diagnosis of the damage, identifying the material, extent, depth, moisture, structural risks and repair needs
- 5.3. Design of the repair procedure with tools, materials, preparation, safety, work sequence and curing times
- 5.4. Execution of the repair plan with cleaning, sanding, rebuilding, sealing, finishing and a watertightness check
- 5.5. Preparation of the follow-up maintenance plan, quality control, photographic record and prevention of new damage
Duration and format of the Basic Hull Repair Techniques Course
It is 300 hours. Tell us how many you can study each week and we will tell you when you will really finish.
This is the pace at which most students finish. It fits well with the installment plan.
Academic leadership and faculty
The Navalis teaching team: working professionals who teach and supervise the programs.
Dr. Marina AlcoverAcademic Director and Head of Quality Assurance
Eng. Diego CifuentesSenior Lecturer in Naval Welding and Non-Destructive Testing; Head of QA/QC for Welded Joints
Capt. Javier Abaroa (MCA)Senior Lecturer in Ship Handling, Electronic Navigation (ECDIS/Radar/ARPA) and GMDSS; STCW Compliance and Bridge Resource Management Coordinator
Dr. Pau FerrerSenior Lecturer in Naval Architecture and Simulation; Director of the Hydrodynamics and CFD Laboratory
Dr. Nuria LlobregatSenior Lecturer in Marine Meteorology, SAR and Operational Safety; Navigation Risk Management Coordinator
Eng. Javier BañulsSenior Lecturer in Electrical Engineering, Automation and ETO Engineering; Electronic Integration and Engine Alarms Coordinator
Eng. Sofía MarquinaSenior Lecturer in Materials, Composites and Corrosion Protection; Coordinator of the Advanced Paints and Coatings Line
Eng. Tomás RieraSenior Lecturer in Propulsion, Alternative Energy and Hybrid Systems; Energy Performance and Vibration CoordinatorObjectives of the Basic Hull Repair Techniques Course
Career opportunities after the Basic Hull Repair Techniques Course
Questions about the Basic Hull Repair Techniques Course
A patch covers the damaged area and is bonded over it, whereas a plug is fitted into the hole itself; the course explains when each one is appropriate and how to make it watertight.
Fiberglass and composites, wood, steel, aluminum, and inflatables and RIBs, with the basic repairs suited to each one.
It covers basic repairs and gives you criteria to recognize when damage is structural and should be referred to a specialist or a more advanced intervention.
Yes, at an introductory level: identifying blisters and internal moisture, basic treatment and preventive protection. Full osmosis treatment is dealt with in a specialized course.
No. The course starts from the basics and is designed for owners, enthusiasts and new workshop staff as well as people looking to start in boat repair.
You take a real or realistic case of hull damage, diagnose it, design the repair procedure step by step and prepare a maintenance and quality record for it.
The course comprises 300 hours of study across 5 modules of about 60 hours each and ends with an applied project. You can progress at your own pace within the schedule set when you enroll.
More programs in Shipyard and finishes
Admission process
No waiting for a call back. If your documents are in order, you can enroll in the same session.
- Profile: aimed at leisure boat owners who want to solve minor hull problems themselves, nautical and DIY enthusiasts who want an introductory, practical course in fiberglass, resins and other repair materials, students of nautical or marine mechanics courses, new staff at shipyards and boat workshops, and anyone interested in boat repair as a professional option; no previous qualification is required, although basic familiarity with materials and tools, manual skill and attention to detail are helpful.
- Language: sufficient command of English to follow the classes and the technical documentation.
- Technical resources: a computer with a stable internet connection, an up-to-date browser and software to view PDF documents.
- Admission: online application, review of your profile and a short interview with the academic team.
- 01ApplicationYour details, background and documents.
- 02Instant reviewWe check that everything is complete and in order.
- 03EnrollmentChoose full payment or instalments and reserve your place.
Admission is provisional until the committee validates the documents provided. If you do not meet the requirements, the full amount is refunded.
Ask us before you enroll
Leave your details and admissions will write to you to answer any questions. If you are already sure, you can apply and pay in the same session.