Before You Launch

1. Inspect and replace hose clamps as necessary. Double-clamp fuel lines and exhaust hoses with marine-rated stainless steel hose clamps. Keep seacocks closed when away from the boat.
2. Inspect all hoses for stiffness, rot, leaks, and cracking, and replace any that are faulty. Make sure they fit snugly.
3. Inspect prop(s) for dings, pitting, and distortion. Make sure cotter pins are secure.
4. Grip the prop (on inboard drive systems) and try moving the shaft up and down and side to side. If it’s loose and can be wiggled, the cutlass bearing may need to be replaced.
5. Check the rudderstock to ensure it hasn’t been bent. Operate the wheel or tiller to ensure the steering works correctly.
6. Inspect the hull for blisters, distortions, and stress cracks.
7. Make sure your engine intake sea strainer (if equipped) is not cracked or bent from ice and is free of corrosion, clean, and properly secured.
8. With inboards, check the engine shaft and rudder stuffing boxes for correct adjustment. A stuffing box should leak no more than two drops each minute when the prop shaft is turning.
9. Inspect and lubricate seacocks.
10. Use a garden hose to check for deck leaks at ports and hatches. Renew caulk or gaskets as necessary.
11. Inspect the bilge pump and float switch to make sure they’re both working properly.
12. Check stove and remote LPG tanks for loose fittings and leaking hoses.
13. Inspect dock and anchor lines for chafe and wear.
14. If equipped, ensure that the stern drain plug is installed.
15. After the boat is launched, be sure to check all thru-hulls for leaks.

Engines and Fuel Systems

1. Inspect fuel lines, including fill and vent hoses, for softness, brittleness, or cracking. Check all joints for leaks and make sure all lines are well supported with noncombustible clips or straps with smooth edges.
2. Inspect fuel tanks, fuel pumps and filters for leaks. Ensure portable tanks and lines are completely drained of stale fuel before filling with fresh fuel. Clean or replace fuel filters and/or fuel-water separators.
3. Every few years, remove and inspect exhaust manifolds for corrosion (for inboard-powered and inboard/outboard boats).
4. Charge the battery.
5. Clean and tighten electrical connections, especially both ends of battery cables. Use a wire brush to clean battery terminals and top up cells with distilled water (if applicable).
6. Inspect the bilge blower hose for leaks and run the blower to confirm correct operation.

Engine Outdrives and Outboards

1. Inspect rubber outdrive bellows for cracked, dried, and/or deteriorated spots (look especially in the folds) and replace if suspect.
2. Check power steering and power trim oil levels.
3. Replace anodes that are more than half wasted away.
4. Inspect the outer jacket of control cables. Cracks or swelling indicate corrosion — the cable must be replaced.
5. Inspect lower unit oil level and top up as necessary.

Sailboat Rigging

1. Inspect swage fittings for cracks and heavy rust (some discoloration is acceptable). Inspect wire halyards and running backstays for “fishhooks” and rust.
2. Remove the tape on turnbuckles and lubricate threads, preferably with Teflon. Replace old tape with fresh tape.
3. If the core around a chainplate is damp, remove the chainplate to inspect and make necessary repairs.

Trailers

1. Inspect tire treads and sidewalls for cracks or lack of tread; replace as necessary. Check air pressure. Don’t forget the spare.
2. Inspect wheel bearings and repack as necessary.
3. Test all lights and replace any broken bulbs or lenses.
4. Inspect winch to make sure it’s working properly. Inspect hitch chains.
5. Inspect trailer frame for rust. Sand and paint to prevent further deterioration.
6. Inspect brakes and brake fluid reservoir.

Safety

1. Check expiration dates on flares.
2. Inspect fire extinguishers. Replace if over 12 years old or if age is unknown. Check for recalls.
3. Ensure you have properly sized and wearable life jackets in good condition for each passenger, including kids. Check inflatable life jacket cylinders and dissolvable “pill” bobbins in auto-inflating models.
4. Test smoke, carbon monoxide, fume, and bilge alarms.
5. Check running lights for operation and spare bulb inventory.
6. Update paper charts and chartplotter software.
7. Replenish first-aid kit items.
8. Check the operation of VHF radio(s) and that the MMSI number is correctly programmed in.
9. Get a free vessel safety check from the U.S. Coast Guard Auxiliary or U.S. Power Squadrons.

For the Dock

1. Check both ends of the shore power cable connections for burns, which indicate the cable and/or boat’s shore power inlet or the dock’s receptacle must be replaced.
2. Test ground-fault protection on your boat and private dock.

The Paperwork

1. Make sure your boat registration is up to date. Don’t forget the trailer tags.
2. Review your boat insurance policy and update coverage if needed. Provide a copy to your marina or club.

List provided by Boat Owners Association of The United States (BoatUS) http://boatus.com/