BoatCostReal ownership math

What will this trip cost in fuel?

SFC estimate, not a sea trial. Pick an engine preset or enter horsepower.

Engine presets

Cruise burn

10.5 gph

WOT 16.13 gph · gas rule of thumb 20 gph (hp/10)

Per hour

$34

4-hour trip

$134

Annual fuel

$1,677

SFC estimate, not a sea trial. Gasoline uses 0.50 lb/hp-hr and 6.2 lb/gal; diesel uses 0.40 and 6.9. Prop, hull, and load will move real burn.

Results travel with the URL.

Questions

How is gallons per hour estimated?
gph at wide-open throttle is specific fuel consumption times horsepower times engines, divided by fuel specific weight. Cruise gph is that figure times a load factor (default 65%).
Is this a sea-trial number?
No. It is an SFC estimate, not a sea trial. Use it to size a budget, then confirm with a fuel-flow meter or a measured run.