Boat Damaged While Trailering: What to Do on the Road or at the Ramp, Insurance, and Hidden Damage Checks

• Pull as far off the road as you safely can, turn on hazard lights and set the parking brake.
• Put on a reflective vest and set out triangles or flares well behind the trailer.
• Check everyone for injuries and call 911 if anyone is hurt, the road is blocked, or there's any fuel leak or smell.
• If a fuel tank, portable tank or battery has broken loose, keep people, cigarettes and flames away and let responders handle it.

Even in a minor crash, a police report helps your claim, especially when another driver is involved. State rules differ on when a crash must be reported (often when someone is hurt or damage passes a set dollar amount), so if in doubt, call. Write down the officer's name, agency and report number. Note that the Coast Guard's boating accident report is for accidents on the water; a road crash goes through the police.

Get the other driver's name, phone, license, plate, vehicle, insurance company and policy number, plus names and numbers of witnesses. BoatUS's claims guidance is to look after anyone injured and not to discuss fault or make promises to anyone; admitting liability can jeopardize your coverage. Stick to facts.

Take wide shots and close-ups, with your phone set to show the date:

• The whole scene, road position, skid marks and traffic signs
• Every side of the tow vehicle, trailer and boat
• The hitch, coupler, safety chains, tires and wheels
• Each spot where the hull touches a bunk or roller, the bow stop, the transom and the motor or drive
• The other vehicle and its plate

A BoatUS claims adjuster's advice for boats moved by truck applies here too: shoot bow to stern and top to bottom, inside and out, and take a quick walk-around video to catch what photos miss.

• If the trailer is damaged (bent tongue, broken axle or spring, flat you can't change, loose boat), don't tow it. Call a tow company that can handle boats, or your trailer roadside service.
• BoatUS notes its trailer roadside service is for breakdowns, not highway accidents, so after a crash expect a commercial tow arranged through police or your insurer.
• If the boat has shifted on the trailer, don't drive with it. Have it secured or loaded onto a flatbed.

Who pays depends on what got damaged and who caused it. Typical patterns, per BoatUS:

• Damage to other people's property or injuries you caused while towing (backing into a wall, your trailer swinging into another car): usually your auto policy's liability coverage, not your boat policy.
• Physical damage to your trailer: your boat policy's trailer coverage, if you bought it. BoatUS says trailers aren't automatically covered on every policy.
• Damage to your boat in a crash: usually your boat policy, subject to its terms and deductible.
• Another driver caused the crash: you can claim against their insurer, or let your own insurer pay you and recover from them; ask your agent which is faster.
• A commercial shipper had the boat: report damage to the shipper before you accept delivery, then to your own insurer; see step 13.

Call your boat insurer and your auto insurer the same day, even if you're unsure which one applies. Late notice is a common reason claims get harder. Our insurance claim guide covers the rest of the process.

BoatUS says the first job after any loss is to protect the boat from more damage. Cover broken windshields or hatches against rain, pump out rainwater, disconnect the battery if wiring was torn, and store the boat securely. Keep receipts for tarps, towing and storage; ask your insurer what it reimburses. Don't start real repairs until the adjuster approves the estimate, as BoatUS advises.

With the boat still on it (or off, if a yard can lift it), check:

• Coupler, tongue and jack: cracks, bends, a coupler that no longer latches, a jack that won't crank.
• Safety chains and wiring: stretched or broken links, torn wires, dead lights.
• Frame: sight down each side rail for bends or twists; look for cracked welds and buckled crossmembers.
• Axles and springs: BoatUS's trailer service data shows U-bolts often rust through first, and axles can be rotting from the inside where you can't see. After a hard hit, look for shifted axles, broken spring leaves and bent hangers.
• Wheels and tires: bent rims, cut sidewalls, and later, uneven tire wear that can mean a bent axle.
• Hubs and bearings: spin each wheel and listen; after the next drive, feel for a hub that runs hot.
• Winch, strap and bow stop: frayed strap, bent winch post, a bow stop pushed back.

Anything bent in the frame or axle is a job for a trailer shop before the rig goes back on the road.

A boat that bounced, slid or shifted on its trailer often shows it where the hull rests.

• Bunks and rollers: look along each bunk or roller line for gouges, star-shaped or spider cracks, and spots where gelcoat is crushed. Check the bunks themselves for broken boards, torn carpet and bent brackets; a broken bunk can concentrate the whole load on a small patch of hull.
• Bow and keel: the bow stop and keel take the hit in a sudden stop. Look for cracks at the stem and along the keel.
• Transom: look for cracks around the motor mounts, at the corners and around the drain plug.
• Inside: open hatches and look at stringers, bulkheads and the inside of the transom for fresh cracks or separated tabbing.

On an aluminum boat, look for popped rivets, dents and weeping seams.

A bouncing outboard or drive puts huge loads on the transom and the trim system, and a road or ramp strike can bend the lower unit.

• Outboards: check the skeg and lower unit for impact marks, the prop for bent blades, and the trim cylinders, tilt tube and mounting bolts for damage. BoatUS's surveyor notes a hard hit on an outboard can damage the trim and tilt system and even the transom.
• Sterndrives: check the drive housing, the bellows and the gimbal area. A damaged drive or bellows can let water in through the transom.
• Inboards: check the prop, shaft, strut and rudder for bends; a bent strut can loosen where it's bolted through the hull.
• Spin the prop by hand (engine off, key out, kill switch lanyard off) and watch for wobble.
• Was the outboard resting on its tilt support lever? Yamaha says that lever is for storage only and isn't built to take trailering loads; it can break and damage the bracket. If yours was trailered that way, have the lever and the clamp brackets checked.

Hidden damage is common after a hard crash: cracked stringers, a loosened transom, an internally damaged gearcase. Ask your insurer to send an inspector or approve a marine surveyor. BoatUS says that after significant damage its insurer assigns inspectors, and its claims adjusters recommend a surveyor to document damage and estimate repairs. A mechanic can pressure-test the gearcase and check the drive's alignment.

Once repairs are done (or you've been told none are needed):

• Launch with the plug in, then stay at the ramp or dock for several minutes and open every hatch to look for water coming in.
• Run at idle first, then slowly increase speed while someone watches the bilge and listens for vibration.
• Check the bilge again after the run. A boat that takes on water after a trailer accident goes straight back on the trailer.

BoatUS describes members who discovered damage only at delivery. Its advice:

• Photograph the boat before it leaves and again before it's unloaded.
• Note any damage on the delivery paperwork before signing; don't let a driver talk you into signing a clean receipt.
• Get the driver's name and license, the truck's DOT number and photos of the truck.
• Report the damage to the shipper right away, then to your insurer, and consider a surveyor to estimate repairs.

Many trailer accidents start with something preventable. BoatUS's trailer service data puts tire problems first and bearings and hubs second among breakdown calls. Before the next trip, use our trailering prep guide to check tire pressure and age, bearings, lights, the hitch and coupler, safety chains, and how the boat is loaded and strapped.

BoatUS's "Take The Hassles Out Of Trailering" collects real insurance claims that read like a checklist: a truck pushed into a ditch on a rain-slick road by the trailer's weight, a rusted axle that broke and dropped the boat on the road, an overloaded tire that blew out, and a trailer that fishtailed and broke away. Its fixes: slow down (lower speed also means cooler tires), use trailer-rated (ST) tires, keep the load at no more than about 85 percent of the trailer's GVWR, set tongue weight at roughly 5 to 10 percent of the total load (too little invites sway), match the ball to the coupler, cross the safety chains, and always use tie-downs, even on a heavy boat. It also notes that switching to radial tires, with their softer sidewalls, made one trailer sway more than its owner expected, until the boat was thrown off. If you change tire types, drive gently at first and recheck the load and tongue weight.

If the motor or transom took a beating, look at how the outboard rides on the road. Mercury explains that bumps, hard stops and vibration stress the transom and the tilt and trim system, that trailering with the engine vertical is easiest on them when ground clearance allows, and that otherwise an outboard support device (a rod between the lower unit and the trailer) takes the load; ask your dealer which one fits your rig.