Reduce Fuel Usage on a Boat

Reducing your fuel consumption while out on the water can save money and the environment.

Steps

Slow down. Slower speeds on the water will reduce fuel usage.
Use trim tabs properly to reduce drag, especially while accelerating up to planing speeds.
Minimize the amount of time that you idle at the dock
Minimize the use of onboard generators.
Use dock-side electrical power (shore power) instead of generators.
Have a float plan so you know exactly where you’re going.
Make sure the hull is clean.
Don’t under-power your boat. It’s important you have enough motor to handle the load.
Check your propeller. If your boat is slow "out of the hole" or lacks top-end speed, you might have the wrong propeller.
Tune-up your engine. A well-tuned engine uses less fuel.
Use the grade of gasoline specified by the engine manufacturer. Always use high-test (preferred) or at least mid-grade gasoline.