Marine Fuel Economy & Cruising Range Solver

Calculate your vessel's miles per gallon, fuel cost per nautical mile, and safe offshore round-trip range using the US Coast Guard 1/3 rule.

Cruising Speed & Fuel Burn

USCG 1/3 Rule
MPH
GPH
Gal
$ / gal

Safe Range & Fuel Efficiency

Safe Out-and-Back Range
94.5 Miles
Efficiency 2.36 MPG
Cost / Mile $2.01/mi
Run Time 5.5 Hours
Total Theoretical Tank Range (Dry) 141.8 Miles (100% Tank Empty)
USCG 1/3 Safety Reserve 20.0 Gallons Reserved for Emergencies
Safe Offshore One-Way Radius 47.3 Miles Maximum Distance Offshore

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