Pre-purchase surveys for yachts

A pre-purchase survey is the buyer's own independent examination of a yacht before the purchase becomes unconditional. Most sale agreements make the buyer's obligation conditional on a satisfactory survey, which makes it a contractual exercise as well as a technical one: it produces the evidence on which a buyer accepts the vessel, renegotiates or walks away. This page sets out what such a survey usually covers and how it is usually charged. It names no surveyor and endorses none.

Scope optionsLink to this section#

A survey is scoped before it is instructed, and the scope is what the buyer pays for. The usual components are:

• A condition survey: hull and structure, decks and superstructure,

machinery and running gear, steering, electrical and plumbing systems, tankage, rig where the vessel carries one, and safety equipment. Composite hulls are commonly checked with moisture readings and percussion sounding.

• Sea trial attendance, so that machinery, handling, vibration, noise and

systems are seen under load rather than alongside.

• A review of class and flag records where the yacht is classed:

outstanding conditions of class and recommendations, survey status, and the history a certificate on its own does not show.

• Oil analysis on engines, generators and gearboxes, where samples are

laboratory-tested for wear metals, water and fuel dilution as an indirect look inside machinery that is not being opened.

• Ultrasonic thickness readings on metal hulls, where a probe measures

remaining plate thickness at set points so that wastage can be mapped against the vessel's original scantlings.

Not every survey needs every component. A buyer choosing between them is trading cost and time against how much of the vessel remains an assumption at signing.

Who carries out the surveyLink to this section#

Yacht and small craft surveying is not a licensed profession in most countries, so accreditation is a voluntary signal and one of the few available. The bodies most often seen in the market are the International Institute of Marine Surveying (IIMS), the Yacht Designers and Surveyors Association (YDSA) and the Society of Accredited Marine Surveyors (SAMS). Each runs its own grades of membership, entry requirements, codes of conduct and continuing professional development, and each publishes a member list, so a claimed membership is checkable. What accreditation does not do is match a surveyor to a vessel type: relevant experience of the material, size and class of yacht in question is a separate question worth asking directly. Class surveys, where the vessel is classed, are carried out by the classification society itself and are not a substitute for a buyer's own survey.

How survey fees are usually structuredLink to this section#

Fees are generally structured either by the vessel's length overall, often in bands, or by an assessment of complexity: material, machinery installation, whether the yacht is classed, and how much has to be opened or moved to see it. Some surveyors quote a fixed fee for a defined scope and price additional components separately; others work on a day rate plus travel and expenses. Costs that usually sit outside the surveyor's own fee and fall to the buyer include hauling and launching, yard access, engine specialists attending in their own right, and laboratory analysis. This page names the structures rather than any figure, because the figure is a function of the vessel and belongs in a quotation.

The report and its timingLink to this section#

A written report follows the attendance rather than accompanying it. A common pattern is a summary of significant findings on the day, then a formal report once notes, photographs and any laboratory results are complete. Turnaround depends on the size of the vessel, the scope agreed and whether analysis is outstanding. The sale agreement usually gives the buyer a limited window in which to accept or reject the vessel on the strength of the survey. Establish when the report will arrive, and whether it lands inside that window, before instructing rather than after.

Is a survey still worth it if the yacht is in class?Link to this section#

Class and a pre-purchase survey answer different questions. Class addresses compliance with a society's rules on the items inside its scope; a pre-purchase survey addresses the condition of the vessel a buyer is about to own, including everything class never looks at.

Who should choose and instruct the surveyor?Link to this section#

The buyer. The survey exists to give the buyer an independent view of the vessel, and a report commissioned by the seller, or arranged by the broker handling the sale, answers to someone else. The instruction is where the independence is either created or lost.

Can the report be shared with a lender or insurer?Link to this section#

Often, and lenders and insurers frequently require one, but a report is normally addressed to whoever commissioned it. Reliance by anyone else may need the surveyor's written consent, which is far easier to arrange before the report is written than afterwards.

Where can a buyer put these questions to a surveyor?Link to this section#

This page is informational rather than advice. What scope a purchase justifies depends on the vessel, its age and its history. Tell us what you are looking for and choose whom to instruct, or read yacht management explained.