Duffy Marine Ltd delivers independent surveys and technical assurance for yachts and superyachts. From pre‑purchase due diligence to complex refits and charter compliance, we protect your interests with clear, actionable reporting.

Core Surveys

• Pre‑Purchase Survey — Full condition assessment, sea‑trial oversight and risk/Cost‑to‑Rectify summary.
• Condition / Insurance Survey — Status for underwriters; structure, machinery and safety compliance check.
• Valuation / Appraisal — Market value, forced‑sale and replacement‑cost opinions with comparables.

New‑Build & Refit

• New‑Build Supervision (Owner’s Representative) — Spec/drawing review, shipyard evaluation, progress inspections and acceptance testing.
• Refit Scope & Supervision — Worklist development, yard tendering, quality inspections, snag and trials close‑out.

Compliance & Governance

• Class & Flag Compliance Audit — REG Yacht Code/MCA, SOLAS/MARPOL/MLC documentation and on‑board checks.
• ISM/ISPS Internal Audits — Safety management and security audits with corrective‑action tracking.
• Documentation & PMS Setup — Technical file reviews, planned‑maintenance setup and handover packs.

Specialist Diagnostics

• Machinery Diagnostics — Oil analysis, vibration/thermal surveys, borescope inspections and performance trending.
• Hull & Structure NDT — Ultrasonic thickness, dye‑penetrant/MPI, laminate moisture and core checks.
• Coatings & Corrosion — Paint condition, adhesion/DFT readings and cathodic‑protection review.
• Electrical System Audit — AC/DC distribution, protection, bonding/earthing, load tests and insulation checks.
• Fuel System & Bunkering — Cleanliness/contamination testing, transfer/day‑tank integrity and procedural review.
• HVAC / Refrigeration — Chilled‑water plant performance, IAQ, noise/vibration and controls.
• Hydraulic Systems — HPU/accumulator/valve condition, cleanliness (ISO 4406) and functional tests.

Navigation, Safety & Operations

• Navigation & GMDSS Audit — Bridge equipment, licensing, logs and distress‑systems verification.
• LSA/FFE Oversight — Life‑saving appliances and firefighting systems readiness and certification review.
• Sea‑Trial Management — Trial programme, data capture and acceptance notes.
• Tender & Toys Inspection — Condition, compliance and documentation for auxiliary craft and PWCs.
• Rig & Deck Gear (Sailing Yachts) — Spars/standing and running rigging, winches, furlers and load paths.

Damage, Disputes & Expert Witness

• Damage / Casualty Survey — Cause, extent and repair specification; evidence preservation for claims.
• Expert Witness & Dispute Support — Independent reports, root‑cause analysis and testimony for mediation, arbitration or court.