By The Saltwater Insider Crew

Here is the single most useful thing to understand about marine surveying before you hire anybody: in the United States, anyone can legally call themselves a marine surveyor. There is no license to lose. There is no state board.

Which means the credential is doing all the work, and you need to know which credentials actually mean something.

The two that count

There are two professional marine surveyor organizations in North America that maintain both continuing education and ethics programs: the Society of Accredited Marine Surveyors, and the National Association of Marine Surveyors.

SAMS was founded in 1987. Its tiers run from Surveyor Associate up to Accredited Marine Surveyor, the designation written as SAMS-AMS. For yacht and small craft work, it is the more commonly held credential.

NAMS goes back to 1962. Its path runs through Apprentice and Associate up to Certified Marine Surveyor, written NAMS-CMS. NAMS has deep roots in commercial hull, machinery and cargo work, and covers yachts and small craft up to 300 feet.

Both generally require around five years of experience plus examination for the full designation, and both mandate ongoing education. Insurers and lenders broadly accept reports from either.

You will encounter other organizations with impressive-sounding acronyms. Many of them have no meaningful membership requirements at all. Ask which body accredits your surveyor and at what tier, and then verify it with that organization directly rather than taking a business card at face value.

Who the surveyor works for

The surveyor works for whoever hires them. On a purchase, that should be you — the buyer — and you should pay the bill directly.

If the seller offers you a recent survey they commissioned, read it, learn from it, and then get your own anyway. A survey is a snapshot of a specific day for a specific client. It is not a warranty and it does not transfer.

Never let the broker choose your surveyor. Not because brokers are dishonest, but because you want a report from somebody whose only relationship in the transaction is with you.

What a condition and value survey actually covers

A pre-purchase survey is typically a condition and value survey, and it is broad by design. Expect the surveyor to work through:

Hull and structure. Moisture readings, percussion testing, blisters, previous repairs, stringers, bulkheads, transom condition, keel and rudder attachment where applicable.

Deck and topsides. Core condition, soft spots, hardware bedding, hatches, ports.

Machinery installation. Engine mounts, alignment, exhaust systems, fuel systems, hoses, clamps, tankage.

Electrical. Wiring standards and condition, panel, batteries, bonding, galvanic protection, shore power.

Steering and controls. Condition and function.

Safety equipment. Required gear, flotation, fire suppression, navigation lights.

Value. A market-based opinion of the vessel’s worth, which is what your lender and insurer will care about.

What it usually does not cover

This is where buyers get surprised.

A general condition and value survey typically does not include a full engine survey. Internal engine condition, oil analysis, compression testing and diagnostic scans are frequently a separate specialist and a separate invoice. On a boat where the propulsion is a large share of the value, hire that specialist.

The survey also does not tear the boat apart. The surveyor works with what is accessible. Tanks, sealed compartments and areas behind joinery may be reported as not inspected, and that language is meaningful — read the limitations section as carefully as the findings.

The sea trial is part of it

Do not skip the sea trial and do not accept a dockside-only survey on a boat you intend to run. Systems that look fine at the dock reveal themselves underway, and a surveyor who watches the boat perform sees things no static inspection catches.

Be aboard for it. Watch. Ask questions in the moment rather than saving them for the report.

Why insurers and lenders care

A survey from an accredited surveyor is frequently a condition of financing and of insurance, particularly on older vessels. Unaccredited surveyors are progressively locked out of financed and insured transactions, which is most transactions.

That is the market doing the filtering that regulation does not.

Reading the report

A good report separates findings by urgency — items requiring immediate attention, items to address in a defined timeframe, and recommendations. That structure is your negotiating document and your first year’s work list.

Do not treat every finding as a deal-breaker, and do not treat a clean-looking report as permission to skip due diligence. The value is in understanding exactly what you are buying.

This article is general guidance and not professional survey, legal or financial advice. Survey scope, accreditation requirements and lender and insurer conditions vary. Verify any surveyor’s credentials directly with the accrediting organization before you hire.

See you on the water.