What to Look for When Buying a Used Boat

Buying a used boat can be an exciting venture, but it requires diligence and a keen eye to ensure you get a vessel that’s both reliable and worth the investment. A boat may look pristine on the surface, but what lies beneath can make or break the deal. Before you hand over your hard-earned money, take the time to evaluate the boat thoroughly. Here’s what you need to know to make an informed purchase.

When to Buy a Used Boat

The time of year can have a significant impact on pricing and availability.

Best time to Buy a Used Boat

Autumn (September to November) is often the best time to buy a used boat, as the boating season winds down, and sellers look to offload their vessels before winter. Since demand is lower, sellers are more likely to negotiate, and you might find significant price reductions.

Winter (December to March) can also yield great deals, especially at boat shows, but selection may be limited. Many dealerships and private sellers slash prices to avoid storage fees, making it an excellent time for patient buyers to capitalize on bargains.

If you’re shopping in spring or summer, be prepared for higher prices and more competition. This is the time when demand peaks as boaters rush to get on the water. While you’ll find the largest selection, you’ll also face stiffer competition from other buyers.

However, if you’re looking for specific models or configurations, the broader availability in this season can be beneficial.

Initial Research to Know What You’re Getting Into

Before stepping foot on a boat, do some homework. Research the brand and model of the boat you’re interested in, read reviews, and check for any manufacturer recalls or known issues. Some boats have notorious flaws or weaknesses that can lead to costly repairs.

Also, check for resale values to ensure you’re paying a fair price. Sites like Boat Trader can give you a ballpark figure on market values.

Ask the seller key questions, such as:

• Do they have a clean title for the boat and trailer? Any liens can cause legal headaches down the road.
• Has the boat undergone any major repairs, accidents, or insurance claims? Boats that have been in accidents may have structural weaknesses that aren’t visible at first glance.
• How many engine hours does it have? An engine with fewer than 500 hours for boats under 10 years old is ideal. Anything above this could indicate excessive use.

Exterior Inspection

A thorough visual inspection can reveal a lot about a boat’s condition. Start by examining the hull for cracks, blistering, or damage. Hairline cracks in high-stress areas such as the transom or near strakes can indicate underlying structural weaknesses.

If the boat has a fiberglass hull, look for signs of delamination—areas where the outer fiberglass layer is separating from the core. Tap the hull with a rubber mallet—if you hear a dull thud, there may be water intrusion or rot beneath the surface.

• Bottom of the Boat: Look for excessive wear or deep scratches, especially if the boat has been used in shallow waters. A boat that has run aground multiple times might have hidden damage to the keel.
• Propeller and Skeg: Check for dings, bends, or other damage that could indicate improper use. A damaged propeller can affect performance and fuel efficiency.
• Trim and Transom: Inspect for leaks or signs of water intrusion. Shake the motor to ensure the transom is solid. If there’s movement, the transom could be rotted internally, a costly repair.

Interior Checks

Step inside and assess the condition of the interior:

• Look for soft spots on the floor, which could indicate rot or water damage. Walk around and press down firmly in multiple areas—sponginess is a red flag.
• Inspect seats, upholstery, and latches. Are they torn, cracked, or waterlogged? Replacing marine upholstery can be costly.
• Ensure hatches and storage compartments open and close properly. Warped or misaligned doors may indicate previous water intrusion.
• Check for musty odors, which could suggest hidden mold or prolonged moisture retention. Mold remediation on boats can be a lengthy and expensive process.

Engine & Mechanical Systems

A boat’s engine is its most crucial component, and repairs can be costly. If possible, run the engine for at least 10 minutes to assess its performance.

• Listen for unusual noises such as knocking, hissing, or grinding. A smooth idle should sound even and consistent.
• Check for leaks around hoses, seals, and gaskets. Any oil or coolant leaks could indicate serious mechanical issues.
• Ensure the boat shifts smoothly between gears. Hard shifting could mean transmission problems.
• Inspect the oil—if it appears milky, water may be leaking into the engine, which is a red flag for major internal damage.
• Review maintenance records and verify regular service.
• Conduct a compression test if you’re serious about buying—it can reveal worn piston rings or other engine inefficiencies.

Electrical Systems

Modern boats rely heavily on electrical systems, and faulty wiring can lead to headaches down the line.

• Test the navigation lights, bilge pump, and horn.
• Ensure all gauges (fuel, RPM, oil pressure, temperature) function properly. Malfunctioning gauges can signal deeper electrical issues.
• Turn on electronics like GPS, fish finders, and radios to verify operation.
• Check the battery terminals for corrosion and ensure it holds a charge.

Safety Equipment

A responsible seller should provide necessary safety equipment. Ensure the boat includes:

• Life jackets in good condition.
• Fire extinguishers with a valid inspection date.
• Bilge pumps that work properly.
• Anchor and lines for securing the boat.

Trailer Inspection

If the boat comes with a trailer, inspect it as carefully as the boat itself.

• Check tire condition, ensuring there’s a usable spare.
• Test the trailer lights and wiring.
• Look for rust on the frame and inspect rollers and bunks for wear.

Sea Trial & Professional Inspection

Never buy a boat without a sea trial. This allows you to test its handling, acceleration, and stability. Observe how it planes, how it steers, and how the engine performs under load. If anything feels off, it probably is.

For added peace of mind, consider hiring a marine surveyor. A professional inspection may cost a few hundred dollars but can save you thousands in unexpected repairs.

Buying a used boat doesn’t have to be a gamble. By conducting a thorough inspection, asking the right questions, and considering long-term ownership costs, you can make an informed decision. Take your time, do your research, and when in doubt—walk away from a deal that doesn’t feel right.

Sea Tow Team

Sea Tow has been the premier leader in on-water boating assistance since 1983. We want to share news, press, tips and all things boating.