FAQs
Whether you’re buying a boat, insuring a vessel, or simply trying to understand the survey process, our FAQ page provides clear answers to the most common questions boat owners ask. Learn what a marine survey covers, how much it costs, when you need one, and how to choose a qualified marine surveyor with confidence.
The cost of a marine survey depends on the type of vessel, its age, size, location, and the type of survey you need.
Additional expenses may include:
- Haul-out fees
- Sea trial costs
- Travel fees if the surveyor must travel
- Specialized inspections (engines, electronics, corrosion testing, etc.)
- Oil samples which require samples to be sent to a lab for analysis, usually adds 4-5 days for results to come back.
- Engine history and analysis.
In most cases, yes—especially if you’re buying a used boat.
A marine survey is similar to a home inspection for a house. It can identify structural problems, moisture intrusion, hull damage, electrical issues, engine concerns, and safety deficiencies that may not be obvious during a walkthrough.
You should strongly consider a survey if:
- You’re buying a used boat, particularly one that is more than a few years old.
- The boat is expensive relative to your budget.
- You need financing (many lenders require a survey).
- You need insurance (many insurers require a recent survey, especially for older boats).
- The boat has been sitting unused for a long time.
- The vessel has a history of damage, repairs, or storms.
You might skip a survey if:
- The boat is very inexpensive and you’re comfortable accepting the risk.
- It’s a small, simple boat (such as a basic jon boat, canoe, or inexpensive runabout) where the survey cost would be a large percentage of the purchase price.
- You have extensive boating and mechanical expertise and can thoroughly inspect it yourself.
As a rough guideline, spending $500–$1,500 on a survey can save thousands of dollars in unexpected repairs or help you negotiate a lower purchase price.
Not always, but often.
Whether you need a marine survey for insurance depends on the boat’s age, value, type, and the insurer’s underwriting requirements.
Common situations:
- Newer boats (often less than 10–15 years old): Many insurers do not require a survey.
- Older boats (often 15–25+ years old): Insurers frequently require a current marine survey before issuing or renewing coverage.
- High-value boats and yachts: A survey is commonly required regardless of age.
- Commercial vessels: Surveys are often required.
- Unusual, custom, or heavily modified boats: Insurers may request a survey.
Even when a survey isn’t required initially, an insurer may ask for one if:
- The boat has had a claim.
- There are questions about its condition.
- Coverage limits are being increased.
A survey can also help you obtain coverage because it documents the vessel’s condition and may identify issues that need correction before the insurer will bind the policy.
A boat survey is a detailed inspection of a vessel’s condition, safety, and overall seaworthiness. What is covered depends on the type of survey, but a typical pre-purchase or insurance survey includes:
Hull and Structure
- Hull condition (cracks, blisters, repairs, damage)
- Deck and cabin structure
- Stringers, bulkheads, and transom
- Signs of water intrusion or delamination
- Keel and rudder (for sailboats)
Safety Equipment
- Life jackets and flotation devices
- Fire extinguishers
- Navigation lights
- Bilge pumps
- Emergency equipment
- Compliance with applicable safety standards
Electrical Systems
- Batteries and battery installation
- Wiring condition
- Circuit protection and breakers
- Shore-power systems (if equipped)
Fuel Systems
- Fuel tanks and lines
- Hoses, fittings, and vents
- Evidence of leaks or corrosion
Plumbing Systems
- Freshwater systems
- Waste and sanitation systems
- Through-hull fittings and seacocks
Machinery and Propulsion
- Visual inspection of engines and transmissions
- Mounts, shafts, propellers, and steering systems
- Operational checks when possible
Important: Most marine surveyors are not engine specialists. For an expensive boat, buyers often hire a separate engine surveyor or mechanic for a more thorough engine evaluation.
Sea Trial
A pre-purchase survey often includes or is paired with a sea trial to assess:
- Engine performance
- Steering and handling
- Vibrations
- Instrument operation
- Overall vessel performance underway
Documentation and Valuation
The survey report typically includes:
- Vessel identification details
- Condition findings
- Safety recommendations
- Estimated fair market value
- Replacement value (for insurance purposes)
What a Survey Usually Does Not Guarantee
A survey is not a warranty. It generally does not:
- Predict future failures
- Disassemble engines or equipment
- Inspect every hidden area of the boat
- Guarantee compliance with every regulation
Typical Output
You’ll receive a written report, often 20–50+ pages for larger vessels, with photographs, deficiencies, recommendations, and an estimated value that lenders and insurers can use.
For a used boat purchase, the survey often pays for itself by uncovering issues that can be used to negotiate the price or avoid a costly mistake.
The length of a boat inspection (marine survey) depends on the size and complexity of the vessel.
Typical timeframes:
| Boat Size | On-Site Survey Time |
| Under 25 ft | 2–4 hours |
| 25–40 ft | 4–8 hours |
| 40–60 ft | 1 full day (6–10 hours) |
| 60+ ft yachts | 1–2+ days |
Additional time may be needed for:
- Haul-out inspection (30 minutes to a few hours)
- Sea trial (1–4 hours)
- Engine survey by a separate mechanic (1–6+ hours)
After the inspection, the surveyor usually spends several more hours preparing the written report. Many survey reports are delivered within 1–7 days, though complex surveys can take longer.
For example, a typical 30-foot used powerboat purchase might involve:
- 3–5 hours for the survey
- 1–2 hours for a sea trial
- Report delivered a few days later
If you’re buying a boat, it’s generally a good idea to attend the survey if possible—you can learn a lot about the vessel and ask questions directly as issues are found.
Small boats are not necessarily easier to survey than larger ones since the logistics and new electronics are much more complicated.
You need to be comfortable with the Surveyor you choose, so have some dialog, kind of an interview with them and be comfortable speaking together.
Choosing the right boat surveyor is important because the quality of the survey can vary significantly.
Look for Professional Accreditation
Three of the most recognized organizations in the U.S. are:
- Society of Accredited Marine Surveyors (SAMS)
- International Institute of Marine Surveying (IIMS)
- National Association of Marine Surveyors (NAMS)
Surveyors with accredited or certified status from these organizations have typically met experience, education, and continuing-training requirements.
Choose Someone Experienced With Your Type of Boat
A surveyor who specializes in:
- Fiberglass powerboats
- Sailboats
- Wooden boats
- Commercial vessels
- Yachts
may be better suited than a generalist. Ask how many boats similar to yours they survey each year.
Before hiring, ask:
- Does the survey include a haul-out inspection?
- Will they attend the sea trial?
- Do they inspect moisture levels in the hull and deck?
- What is included in the final report?
- Are engine inspections included, or do they recommend a separate mechanic?
Professional liability (errors and omissions) insurance and positive references from recent clients can provide additional confidence.
Compare More Than Price
The cheapest survey is not always the best value. A surveyor who charges a few hundred dollars more but identifies major issues can save you thousands in repairs or help you negotiate a better purchase price.
Questions to Ask
- Are you accredited by SAMS , IIMS or NAMS?
- How long have you been surveying boats?
- How many boats of this type have you surveyed?
- Can I or should I attend the survey?
- What is your fee and what does it include?
Having a vessel surveyed provides an independent assessment of its condition, value, and safety. The reasons vary depending on whether you’re buying, owning, financing, or insuring the boat.
When Buying a Boat
A survey can help you:
- Identify hidden structural, mechanical, electrical, or safety issues.
- Avoid purchasing a vessel with serious defects.
For Insurance
Many insurers require a survey for older or higher-value vessels. A survey report can:
- Document the vessel’s condition.
- Establish an insurable value.
- Identify safety deficiencies that may need correction before coverage is issued.
For Financing
Lenders often require a survey before approving a marine loan. The report helps verify:
- The boat’s condition.
- Its fair market value.
For Safety
A survey can uncover issues such as:
- Hull damage or deterioration.
- Faulty wiring.
- Fuel system leaks.
- Corroded fittings.
- Defective safety equipment.
Addressing these problems can reduce the risk of breakdowns, accidents, or costly repairs.
To Establish Value
A surveyor typically provides:
- Fair market value.
- Replacement value (often used for insurance).
This can be useful for purchases, sales, financing, insurance, estate planning, or legal matters.
For Existing Owners
Even if you’re not buying or selling, periodic surveys can help monitor the condition of an aging vessel and identify maintenance needs before they become major expenses.
A vessel survey is often worthwhile because it provides professional information about a boat’s condition, safety, and value—helping owners, buyers, lenders, and insurers make informed decisions.
If selling your vessel, often having a Surveyor to a cursory walk through can have benefit to point out any items that may affect the future sale as well.
A marine survey is usually divided into several major components, each focusing on a different aspect of the vessel.
1. Documentation Review
The surveyor verifies:
- Hull Identification Number (HIN)
- Registration or documentation papers
- Vessel specifications
- Equipment records (when available)
2. Hull and Structural Inspection
This is often the most important part of the survey and includes:
- Hull condition
- Decks and cabin structure
- Transom
- Bulkheads and stringers
- Keel and rudder (sailboats)
- Signs of impact damage, repairs, corrosion, or water intrusion
3. Mechanical Systems
The surveyor visually inspects:
- Engines
- Transmissions
- Steering systems
- Shafts, struts, and propellers
- Engine mounts and controls
For a thorough engine evaluation, a separate mechanic or engine survey may be recommended.
4. Electrical Systems
Inspection typically includes:
- Batteries and battery installation
- Wiring and connections
- Circuit breakers and fuses
- Shore-power systems
- Bonding and grounding systems
5. Fuel Systems
The surveyor checks:
- Fuel tanks
- Fuel lines and hoses
- Fittings and clamps
- Ventilation and leak risks
6. Plumbing and Onboard Systems
This may include:
- Freshwater systems
- Bilge pumps
- Sanitation systems
- Water heaters
- Through-hull fittings and seacocks
7. Safety Equipment
The surveyor reviews:
- Fire extinguishers
- Life jackets and flotation devices
- Navigation lights
- Sound-signaling devices
- Emergency equipment
8. Haul-Out Inspection
Many surveys include an out-of-water examination to inspect:
- Bottom condition
- Propellers
- Running gear
- Through-hulls
- Rudders and keels
9. Sea Trial
During a sea trial, the surveyor observes:
- Engine performance
- Steering and handling
- Vibration or noise issues
- Instrument operation
- Overall vessel behavior underway
10. Valuation and Written Report
The final report generally includes:
- Findings and observations
- Safety recommendations
- Required and suggested repairs
- Photographs
- Fair market value
- Replacement value for insurance purposes
The exact scope depends on whether the survey is for a purchase, insurance, financing, damage claim, or appraisal, but these are the core parts of most marine surveys.
If you’re preparing a boat for a marine survey, the goal is to give the surveyor safe, complete access to the vessel and its systems.
Gather Documentation
Have available:
- Registration or documentation papers
- Maintenance and repair records
- Engine service records
- Equipment manuals (if available)
- Previous survey reports
Good records can help demonstrate how the boat has been maintained.
Make the Boat Accessible
The surveyor will need access to:
- Bilges
- Engine compartments
- Electrical panels
- Fuel tanks and lines
- Storage lockers
- Through-hull fittings
Remove unnecessary gear and clutter that could block inspections.
Ensure Systems Can Be Tested
Make sure:
- Batteries are charged
- Fuel is available
- Water systems can be operated
- Electronics can be powered on
- Keys are available
A surveyor can evaluate more thoroughly when systems are functional.
Schedule a Haul-Out
For a pre-purchase survey, arrange a haul-out if requested. This allows inspection of:
- The hull bottom
- Propellers
- Shafts and running gear
- Rudders and through-hulls
Prepare for a Sea Trial
A sea trial is often part of a pre-purchase survey. Ensure:
- The boat is operational
- Engines can reach normal operating temperature
- Safety equipment is onboard
- Weather conditions are suitable
If You’re the Buyer, you should:
- Attend the survey if possible
- Ask questions during the inspection
- Take notes on deficiencies and recommended repairs
- Consider hiring a separate engine specialist
Being prepared helps the survey go more smoothly and gives the surveyor the best opportunity to assess the vessel accurately.
In a typical boat sale, the buyer usually pays for the marine survey because the survey is performed for the buyer’s benefit.
Here’s how costs are commonly allocated:
| Expense | Usually Paid By |
| Marine survey | Buyer |
| Haul-out and relaunch fees | Buyer |
| Sea trial fuel and operating costs | Seller (sometimes negotiated) |
| Engine survey/mechanic inspection | Buyer |
| Repairs identified by the survey | Seller only if agreed during negotiations |
During a Boat Purchase
The buyer hires the surveyor and receives the report. If the survey uncovers problems, the buyer may:
- Proceed with the purchase as-is.
- Renegotiate the price.
- Ask the seller to make repairs.
- Walk away from the deal if the purchase agreement allows.
For Insurance Surveys
The boat owner typically pays for the survey because the insurer is requiring it.
For Damage or Claims Surveys
Payment depends on the circumstances:
- The owner may hire their own surveyor.
- An insurance company may hire and pay for a surveyor to assess a claim.
- In disputes, each party may hire its own surveyor.
For Financing Surveys
The borrower (boat buyer/owner) usually pays, even if the lender requires the survey.
Before scheduling a survey, it’s a good idea to clarify in writing who is responsible for:
- Survey fees
- Haul-out charges
- Sea trial costs
- Any follow-up inspections
This helps avoid misunderstandings, especially in private-party boat sales.