emonster tools

Yacht voyage fuel and cost planner

Estimate passage time, propulsion and generator fuel, tank requirements, top-up purchases, and voyage cost.

Your inputs

The editable example is illustrative. Enter your own dimensions, operating data, prices, and fees. Results update as you edit.

≥ 0.000001
0.01–100 kn
0–500 %
≥ 0 /h
≥ 0 /h
≥ 0 h
0–500 %
≥ 0
≥ 0
≥ 0
≥ 0

Calculations run in your browser. Inputs are not saved or sent to analytics.

Your result

Complete the inputs to see your result.

How it works

  • Passage time = Distance in nautical miles ÷ Average ground speed × (1 + Additional passage time ÷ 100)
  • Fuel consumed = Passage time × Total engine fuel consumption + (Passage time + Generator hours outside passage) × Generator fuel consumption
  • Fuel including reserve = Fuel consumed × (1 + Fuel reserve allowance ÷ 100)
  • Estimated voyage cost = Fuel consumed × Price per fuel unit + Other voyage costs

Assumptions and limitations

Speed is average speed over ground in knots; enter combined engine consumption at that operating point. The generator runs during passage plus the extra hours entered. Reserve is added to fuel requirements but is not treated as consumed fuel. Fuel quantities and price must use the same selected unit. This budget does not assess weather, route safety, or the adequacy of a reserve.

Sources

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