Eng. Sofía Marquina
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Professor of Materials, Composites, and Corrosion Protection; Coordinator of the Advanced Paints and Coatings Line
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Laminates (GFRP/CFRP/aramid), sandwich structures (PVC/SAN/PET/balsa), vacuum infusion and curing, coating inspection (WFT/DFT, adhesion, porosity), surface preparation (ISO 8501/8502/8503), corrosion control (AMPP/ISO/SSPC), cathodic protection (galvanized systems/ICCP)
Materials engineer specializing in marine composites and corrosion protection systems for ships, yachts, and port structures.
Accredited as an AMPP Coating Inspector (CIP), she leads Navalis in the standardization of surface preparation procedures, coating application, and QA/QC on site and in the shipyard, with a focus on reducing rework, ensuring thickness compliance (DFT), and providing guarantees against osmosis, underfilm corrosion, and fouling.
She integrates laminate and process design (hand lay-up, vacuum infusion, prepreg out-of-autoclave) with ISO 12215 criteria for hulls and decks of small boats, and with testing and inspection methodologies (ASTM/ISO/AMPP) to ensure mechanical performance and durability.
It absorbs the Advanced Paints and Coatings line, including epoxy barrier coats, antifoulings (SPC/ablative/hard), aliphatic polyurethanes, and high-performance hybrid systems, as well as cathodic protection (sacrificial anodes/ICCP) and metal-coating-electrolyte compatibilities in marine environments.
Its teaching approach is based on constructive alignment and practical workshops: from the laminate layout and surface plan to validation through testing (adhesion ASTM D4541/D3359, profile ISO 8503/D4417, soluble salts ISO 8502-6/9, porosity ASTM D5162), leaving documentary traceability for audits, class, and after-sales.
Skills Key
- Design of laminates (GFRP/CFRP/aramid) and sandwich panels (PVC/SAN/PET/balsa) in accordance with ISO 12215
- Vacuum infusion: consumables, flow strategy, leak testing, curing, and Tg (DSC/DMA)
- Surface preparation: Sa/St grades (ISO 8501-1), anchor profile, chlorides (Bresle), dust, and moisture
- Coating inspection: WFT/DFT (ISO 2808), adhesion (D3359/D4541), porosity (holiday test), hardness, abrasion (D4060)
- Anti-corrosion: selection of systems (ISO 12944), barrier coats, antifouling, PU topcoats; compatibilities and recoating windows
- Cathodic protection: design and verification of anodes (Zn/Al), Ag/AgCl references, ICCP and galvanic pair mitigation
- NDT in composites: ultrasound (C-scan), active thermography, shearography, tap test, and acceptance criteria
- Gelcoat/osmosis repair: diagnosis, peel, osmotic wash, drying, barrier, and fairing
- QA/QC: ITP, painting PQR/WPS, weather records, application checklists, and stage release
Safety and environment: VOCs, isocyanates, PPE/ventilation, waste management, and regulatory compliance
Find out more
Current teaching
- “Marine Materials & Composites (ISO 12215)” — Degree, 6 ECTS, in-person, T1
- “Vacuum Infusion Processes and QA” — Master’s/Diploma, 4 ECTS, blended (Valencia+online), T2
- “Coating Inspection — CIP Preparation” — Professional certificate, 60 hours, online, T2
- “Anti-corrosion and Cathodic Protection in Yachting and Marine” — Diploma, 3 ECTS, online, T3
Programmes in which they participate
- Master’s Degree in Shipbuilding & Refit
- Master’s Degree in Naval Structures and Materials
- Master’s Degree in Marine Propulsion and Energy Efficiency
- Master’s Degree in Marina Management & Operations
Accreditations and certifications
- AMPP CIP (Coatings Inspector) Preparation Certificate — standards, instruments, reports.
- Vacuum Infusion Certificate — setup, consumables, process control, acceptance criteria.
- NDT Certificate for Composites — UT/thermography/shearography/tap test.
- Osmosis and Gelcoat Repair Certificate — diagnosis and comprehensive protocol.
Key experience
- 55 m superyacht exterior refit: surface plan + epoxy/PU system; DFT compliance >98%, rework reduction −35%, high-gloss “mirror grade” finish.
- 20–30 m charter fleet: antifouling program and ISO 19030 control; −3.9% improvement in fuel consumption and longer dry dock intervals.
- Marina pontoons and fingers: mitigation of corrosion accelerated by galvanic pairs; redesign of anodes and Ag/AgCl potential verification.
Publications / applied research
- “DFT acceptance criteria and adhesion in C5-M (severe marine) environments” — technical guide.
- “Infusion optimization in sandwich decks: flow network and vacuum control strategies” — white paper.
- “Coating–substrate–electrolyte compatibility in aluminum hulls” — technical note.
Projects / consultancy
- QA/QC program for boutique shipyard: painting ITP, weather records, internal audits.
- Plan to combat osmosis in GFRP fleet: diagnosis, drying, barrier, and after-sales warranty.
- Cathodic protection in marina: calculation/location of anodes, potential audit, and maintenance.
Methodology and assessment
- Approach: project-based learning and laboratories (real checklists, instrumental measurements, CIP-type reports).
- Assessment: participation 10%, practical work 30%, applied project 40% (painting/infusion/NDT plan), exam 20%.
- Tools: WFT/DFT meters, pull-off/cross-cut adhesion testers, porosimeters, Bresle meters, roughness testers, vacuum pumps/sensors.
Teaching outcomes/KPIs
- Standard-compliant deliverables (ITP, reports, and checklists) in >90% of projects.
- Typical decrease in non-compliance in practices (overspray, holidays) −25–40% between the 1st and 3rd iterations.
- Student satisfaction in laboratories: 4.6/5.
Languages
- Spanish (C2)
- English (C1)
Availability
- Valencia campus and online
- In-person workshops in Varadero
- Annual.
Contact
- Email: sofia.marquina@navalisinstitute.co.uk
- LinkedIn: (añadir URL si procede)