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A full pre-purchase survey on a 40 to 60m motor yacht costs $25,000 to $80,000 and takes 10 to 14 days end to end. On a 70m+ yacht the all-in number runs $50,000 to $150,000 once you include yard time, naval architect input, and machinery specialists. The buyer pays, the surveyor reports to the buyer, and the report is the single most useful negotiating document the buyer will produce between offer and closing. About 25 percent of surveys on pre-owned yachts above 40m produce a finding that meaningfully changes the deal.
This page is the working playbook for commissioning one. It assumes you have a memorandum of agreement or letter of intent in place, a deposit in escrow with the buyer's broker, and a 14-to-21-day survey allowance written into the contract. If any of that is not true, stop and read how to buy a yacht first.
What a yacht survey is, and what it is not
A yacht survey is a forensic condition report on the hull, machinery, systems, and electronics of a specific yacht at a specific moment, commissioned by the buyer and paid for by the buyer. It is not a valuation, it is not a warranty, and it is not a list of every fault on the yacht. Surveyors do not lift floorboards in every guest cabin, do not strip cabinetry, and do not open every junction box. They look at what is accessible, they test what is testable, and they note what is observable.
The report you get back is structured into three parts. The condition report itself, which runs 40 to 120 pages on a yacht above 50m. A deficiency list, ranked by severity and usually colour-coded, that becomes the negotiating document. And a forward maintenance schedule, which projects what the yacht is likely to need in the next 12, 24, and 60 months.
The condition report has no opinion on price. It has an opinion on the cost of remediation, and the buyer's broker translates that into a renegotiation position.
What it costs and what drives the number
The headline survey fee is one of four cost lines. Surveyor day rates run $1,200 to $2,500 on the hull side. A 40 to 60m yacht typically takes five to eight surveyor days. Add machinery specialists at $1,800 to $3,500 a day for two to four days. Electronics and AV usually require an electro-technical officer at $1,400 to $2,200 a day for one to three days. HVAC and watermaker surveys on yachts above 50m add another $3K to $8K.
The haul-out itself is the variable nobody quotes accurately at the offer stage. A 50m yacht hauling in Antibes will spend $12K to $25K on yard time, lift, pressure-wash, and three days on the hard. The same yacht in Viareggio runs $15K to $30K. In the Caribbean, expect $8K to $18K but with limited yard slot availability between January and April. Florida yards run $10K to $22K and are usually bookable inside three weeks.
The fourth cost line is the buyer's. Travel, accommodation, and broker time spent attending the survey are not paid by the surveyor. On a typical deal you will spend three to six days physically on or near the yacht. Budget that.
Total all-in survey cost as a percentage of yacht value runs 0.4 to 0.8 percent on yachts above 40m, falling to 0.2 to 0.4 percent on yachts above 80m. A $20M purchase carries roughly $40K to $80K in survey cost. A $60M purchase carries roughly $80K to $200K.
Choosing the surveyor
The buyer instructs. Never accept a surveyor recommended by the selling broker without independent vetting. The selling broker has a structural incentive to recommend a surveyor whose reports are usually closing-friendly. Buyers' brokers can recommend, but the final call sits with the buyer.
Three accreditations are worth knowing. SAMS, the Society of Accredited Marine Surveyors, is the US-led standard. IIMS, the International Institute of Marine Surveying, is the broader international body. RINA and DNV are the classification society routes when the yacht is in or going into class.
For yachts above 50m, the surveyor should have at least 10 years of documented survey experience and should name the specific yachts above 40m they have surveyed in the last 36 months. For yachts above 80m, the survey is usually a small team rather than a single surveyor, led by an ex-naval architect or ex-classification surveyor.
We will name three firms we have seen produce honest, thorough reports on yachts above 50m: [VERIFY: surveyor names with permission to publish]. We will not name two we have seen produce closing-friendly reports written for the listing broker rather than the buyer; that list is shared on request to readers who email editor@yachtsforkings.com with a deal in progress.
What gets surveyed
A complete pre-purchase survey covers eight areas.
Hull and structure. Plating, framing, welds, corrosion, blistering, osmosis on composite hulls, ultrasound thickness testing on steel and aluminium. Hull inspection is impossible without haul-out, which is why hull-out is non-negotiable above 30m.
Main propulsion. Main engines, gearboxes, propeller shafts, propellers, rudders, stabilizers, thrusters. Engine surveys include oil sample analysis, vibration analysis under load, exhaust temperature mapping, and inspection of major service records. A 40 to 60m motor yacht typically runs MAN or MTU mains. The surveyor needs hours-since-overhaul on each engine and the last three years of running logs.
Auxiliary systems. Generators, bow and stern thrusters, watermakers, fuel polishing, sewage treatment, HVAC chillers, hydraulics for stabilizers and tender handling. These fail at higher frequency than mains and cost more to access than to repair.
Electrical. Switchboards, DC and AC distribution, shore power compatibility, alternators, battery banks, lithium installations if present. Electrical failures dominate the post-purchase deficiency rate on yachts five to fifteen years old.
Navigation and communication. Radars, ECDIS, AIS, autopilot, VSAT, all bridge electronics, satellite communications. The ETO survey covers this area. Bridge electronics typically have a seven-to-ten-year refresh cycle; a yacht with original electronics from build is on a yellow-flag list for the surveyor.
Tenders, toys, and deck equipment. Cranes, davits, anchors, winches, deck wash, swim ladders, hot tubs, water toys. Crane certification is class-driven and lapses commonly. Toys are inventoried but not surveyed.
Interior. Joinery, soft furnishings, headlinings, fixtures, appliances, plumbing, hot water, drainage. Interior surveys are visual unless explicitly extended into intrusive inspection.
Documentation. Class records, flag state records, registration, MMSI, MCA compliance status, SMC and ISM if commercially registered, charter licence if charter-registered, all owner-supplied service records. The documentation review is where charter-registered yachts most often fail their pre-purchase. We have seen a 56m motor yacht close with a lapsed Manila Amendments compliance gap that cost the new owner $180K to remediate in the first nine months.
Haul-out, sea trial, and machinery survey, in that order
Haul-out is the first physical event. The yacht goes onto the hard for two to four days. Anti-foul condition, hull plating thickness on steel, blister survey on composite, propeller condition, rudder bearings, sea chests, anchor chain, and bow thruster tunnel are all inspected. Ultrasound testing on a steel hull is required at the 10-year and 15-year survey cycles; if the seller has not provided recent UT readings, the surveyor will commission them and the buyer pays.
Sea trial is two to four hours, run on a defined load profile. Cruise speed for 90 minutes, full power for 20 minutes, manoeuvring trials at low speed, anchoring trials, stabilizer test at zero speed and underway. The buyer and broker should be aboard. The seller's captain runs the trial. The surveyor monitors temperatures, vibration, noise, fuel consumption, and bridge electronics performance.
Machinery survey runs concurrent with sea trial and continues for one to two days after. Engine room inspection, oil sample collection, vibration recording at standardized RPM bands, exhaust temperature mapping, fuel system inspection, cooling system survey. Oil sample results arrive three to seven days after the trial. Surveys are not complete until those results return.
What the report misses
A pre-purchase survey is not destructive. The surveyor does not cut floors, does not strip cabinetry, does not drain tanks, and does not open sealed engine components. The deficiency list is what is visible and testable inside the agreed survey window. Hidden corrosion behind insulation, undocumented modifications to original wiring, and fuel tank corrosion below the waterline are the most common post-purchase surprises.
The single most common miss on yachts above 50m is the refit history. A yacht that has been through a major refit five to eight years ago usually has half-documented modifications that diverge from class drawings. The surveyor flags the divergence; the buyer's new captain finds the cost of it in year two.
A 65m motor yacht we wrote up in our yachts for sale 50m guide had a clean survey on engine and hull, then surfaced $1.4M of refit-era wiring rework in the first 18 months under new ownership. That was a surveyor miss inside the scope of an industry-standard survey. The buyer's broker absorbed part of the cost as a goodwill response. The lesson is to budget 0.5 to 1.0 percent of yacht value as an additional 12-month contingency on every pre-owned purchase above 40m, regardless of how clean the survey reads.
Using the report in negotiation
The report arrives as a draft seven to ten days after the survey ends. The buyer and the buyer's broker review the deficiency list, price each item against yard quotes from two reputable yards (not the seller's preferred yard), apply a 20 percent contingency, and present the total back to the seller as either a price reduction or a remediation list, with a deadline for response.
A clean report on a yacht under five years old should produce a renegotiation in the 1 to 3 percent range. A clean report on a yacht five to ten years old should produce a renegotiation in the 3 to 7 percent range. A yacht with deficiencies above 10 percent of asking price is either repriceable or walkable. Anything above 15 percent and the deal usually moves to walking unless the seller agrees to a substantial reduction.
The buyer should always reserve the right to walk and recover the deposit if the surveyor identifies a material deficiency that the seller will not remediate or price. The MoA usually says this in standard terms. Confirm it before the survey starts.
Frequently asked questions
How much does a yacht survey cost? A full pre-purchase survey on a 40 to 60m motor yacht costs $25,000 to $80,000 including haul-out, sea trial, machinery survey, and electronics. Above 60m, $50,000 to $150,000 is more typical. The buyer pays.
How long does a yacht survey take? Plan on 10 to 14 days end to end on a yacht above 40m. Two days of dockside inspection, one to two days of sea trial, two days haul-out, and a week for report writing. Survey is often the longest item in a 60 to 90 day purchase timeline.
Who pays for the yacht survey? The buyer pays. The surveyor reports to the buyer. The seller pays the haul-out yard fees only if explicitly negotiated, otherwise these sit with the buyer too. Budget $8K to $25K for yard time alone.
Can a yacht survey kill a deal? Yes and routinely. Roughly 20 to 30 percent of pre-purchase surveys produce a finding that either renegotiates the price by more than 10 percent or terminates the deal. Major engine issues, structural corrosion, and undocumented refit work are the usual triggers.
What is the difference between a yacht condition survey and an insurance survey? A pre-purchase condition survey is a full assessment of buying suitability and runs $25K to $80K. An insurance survey is narrower, focuses on insurability, and typically costs $3K to $8K. Buyers need the condition version. Insurers may accept it for the first underwriting cycle.