Fuel Consumption

Estimate main engine + auxiliaries fuel from SFOC and power. Single voyage leg or multi-leg with speed–power scaling.

Method

Pick based on voyage setup.

SFOC (g/kWh)

Sea margin (%)

Applied to main engine power.

Aux/Hotel (kW)

Notes (optional)

A) Single-leg

Distance (nm)

Speed (kn)

Main engine power PD (kW)

Time (h) = Distance / Speed. Total power = PD × (1+margin) + Aux. Fuel (t) = SFOC(g/kWh) × kWh / 1e6.

Total distance: — nm

Total time: — h (— days)

Average speed: — kn

Total energy: — kWh

Total fuel: — t

Daily fuel rate: — t/day

—

Notes

Fuel (t) = SFOC(g/kWh) × Energy(kWh) / 1e6. Energy from main engine with sea margin + auxiliaries.

Multi-leg power: \(P(V) = P_{\mathrm{ref}} \cdot (V/V_{\mathrm{ref}})^n\). Typical n ≈ 3.

SFOC is treated as constant over load; adjust inputs per your engine map if needed.