Question 1

What types of marine survey are there and which do I need?

Accepted Answer

The main types are: pre-purchase survey (comprehensive inspection before buying), insurance survey (required by underwriters, usually every 3-5 years), condition and valuation survey (for refinancing or estate purposes), damage survey (after a grounding, collision or storm), and class society survey (for yachts under classification). If you are buying a yacht, you need a pre-purchase survey — it is the single most important step in the buying process and should never be skipped, regardless of how good the boat looks.

Question 2

How much does a marine survey cost?

Accepted Answer

Pre-purchase surveys run $20-$35 per foot of hull length in the US. A 50-foot yacht costs roughly $1,000-$1,750. Insurance surveys are slightly less, typically $15-$25 per foot. Engine surveys and sea trials add $500-$1,500 depending on the number of engines. Haul-out costs (required for any thorough hull survey) are separate and run $8-$20 per foot. The survey fee is trivial compared to the cost of buying a boat with hidden structural problems.

Question 3

How do I choose a marine surveyor?

Accepted Answer

Look for SAMS (Society of Accredited Marine Surveyors) or NAMS (National Association of Marine Surveyors) accreditation in the US, or YDSA/IIMS membership internationally. Verify they are accepted by your insurance underwriter. Ask for a sample redacted report to assess thoroughness — a good survey report is 30-60 pages with photos. Choose a surveyor experienced with your vessel type (sail, power, steel, aluminum, composite) and size range. Never use a surveyor recommended by the seller or the selling broker.

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