Free tool

Vessel Fuel Consumption

Estimate daily consumption at another speed from a known speed and consumption using the cube law (admiralty). No sign-up needed; results update as you type.

See the system that does this automaticallyOpen the live demo

Calculator

This calculator runs in your browser; the data you enter is not stored.

Results

Daily consumption at new speed
20.77 t/gün
Per mile at reference speed
96.2 kg/nm
Per mile at new speed
75.2 kg/nm
Saving per mile
21.7 %

Vessel Fuel Consumption: worked example

Example values: Reference speed 13 knots, Daily consumption at reference speed 30 t/gün, New speed 11.5 knots, Speed exponent 3. With these values the results are:

Daily consumption at new speed20.77 t/gün
Per mile at reference speed96.2 kg/nm
Per mile at new speed75.2 kg/nm
Saving per mile21.7 %

How to use: Vessel Fuel Consumption

  1. Enter your own values: Reference speed, Daily consumption at reference speed, New speed, Speed exponent.
  2. Results are calculated as you type: Daily consumption at new speed, Per mile at reference speed, Per mile at new speed, Saving per mile.
  3. Check every step of the calculation in the formulas below.

How is it calculated?

  • Daily consumption at new speed = [Daily consumption at reference speed] × ([New speed] ÷ [Reference speed])^[Speed exponent]
  • Per mile at reference speed = [Daily consumption at reference speed] ÷ ([Reference speed] × 24) × 1,000
  • Per mile at new speed = [Daily consumption at new speed] ÷ ([New speed] × 24) × 1,000
  • Saving per mile = (1 − [Per mile at new speed] ÷ [Per mile at reference speed]) × 100

Other tools running on Voyage Economics Engine

Calculates voyage result and TCE from distance, speed, sea and port days, fuel, port, canal and hire costs.

FCRSOFT

FCRSOFT does this for you automatically

You don’t need to do the calculations and checks on this page by hand every day. FCRSOFT derives them all automatically from the records entered in the field.

  • Fuel, port and canal costs are recorded for every voyage.
  • TCE and voyage result are compared as estimate versus actual.
  • Bunker purchases and consumption are tracked per voyage.

Frequently asked questions

How is Vessel Fuel Consumption calculated?

Estimate daily consumption at another speed from a known speed and consumption using the cube law (admiralty). The calculation uses Voyage Economics Engine: Calculates voyage result and TCE from distance, speed, sea and port days, fuel, port, canal and hire costs.

How is Daily consumption at new speed found?

Daily consumption at new speed = [Daily consumption at reference speed] × ([New speed] ÷ [Reference speed])^[Speed exponent]. With the example values (Reference speed 13 knots, Daily consumption at reference speed 30 t/gün, New speed 11.5 knots, Speed exponent 3) the result is 20.77 t/gün.

How is Per mile at new speed found?

Per mile at new speed = [Daily consumption at new speed] ÷ ([New speed] × 24) × 1,000. With the example values (Reference speed 13 knots, Daily consumption at reference speed 30 t/gün, New speed 11.5 knots, Speed exponent 3) the result is 75.2 kg/nm.

Worked example: Vessel Fuel Consumption

Example values: Reference speed 13 knots, Daily consumption at reference speed 30 t/gün, New speed 11.5 knots, Speed exponent 3. Daily consumption at new speed: 20.77 t/gün; Per mile at reference speed: 96.2 kg/nm; Per mile at new speed: 75.2 kg/nm; Saving per mile: 21.7 %.

Is Vessel Fuel Consumption free?

Yes. The tool is free, needs no sign-up and runs in your browser; the data you enter is not stored.

Can FCRSOFT do this calculation automatically?

FCRSOFT records each voyage’s estimate and actual and calculates TCE automatically. You can try the Shipowner & Ship Management package in the live demo without installing anything.

FCRSOFT

Track Voyage Economics Live

FCRSOFT records each voyage’s fuel, port and canal costs, freight revenue and TCE as both estimate and actual.

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