How can I assess quality when buying a used boat?
I'm looking at buying my first used boat and want to know how to judge its condition beyond clean paintwork and tidy upholstery. What should I check myself, and when is it worth paying for a survey?
Answer
Assess a used boat by its structure, maintenance history and performance under load, rather than its age or polished appearance. Check the paperwork and costly components first, then make the purchase conditional on a satisfactory independent survey, inspection ashore and sea trial.
Check records and maintenance
A well-maintained 20-year-old fibreglass boat can be a better buy than a neglected newer one. Consistent invoices, dry lockers and tidy machinery you can reach tell you more than fresh antifouling or new cushions.
Ask for service invoices, previous surveys and records of groundings, collisions, flooding and major repairs. Check the hull identification number and engine serial number against the documents where recorded; identification arrangements vary on older boats.
- Confirm ownership: establish that the seller has authority to sell, and investigate outstanding finance, mortgages and relevant registration records.
- Check replacement dates: ask about standing rigging, saildrive diaphragms, exhaust elbows, batteries and fuel hoses where fitted.
- Agree the inventory: list the sails, electronics, tender, safety equipment and other items included in the sale.
A broker can help with documentation and ownership checks, but appoint your own surveyor. An old survey provides useful background; it does not establish the boat's condition today.
Inspect the hull and deck
View the boat afloat and ashore. Afloat, look for leaks and check whether bilge water is fresh, salty or oily. Ashore, inspect the keel, rudder, propeller, shaft or saildrive, and through-hull fittings. Stay clear beneath a suspended boat. Inspect only once it is securely supported.
On fibreglass boats, investigate cracks around chainplates, stanchion bases, the mast step and keel attachment. Fine surface crazing can be cosmetic, but movement, distortion or cracks crossing structural areas need professional assessment. Soft decks can indicate a wet or detached core. Moisture-meter readings need interpreting alongside the boat's construction and other findings.
Look beneath floors and bunks. Keel bolts should show no significant corrosion, and floors, frames and bonded structural members should be intact. Investigate rust staining, cracked bonding or evidence of movement. Do not tighten keel nuts experimentally: torque and procedures depend on the builder, bolt material and keel arrangement.
For timber, steel or aluminium boats, use a surveyor experienced in that material. Timber needs checks for decay and fastening condition; metal hulls can corrode behind apparently sound interiors. Steel commonly needs ultrasonic thickness measurements, with access behind linings where necessary.