Marine & Nautical

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Ship Fuel Consumption

Fuel burn rises with the cube of speed for a ship.

Formula

F = c\, v^3

Variables

FFuel rate

cConstant

vSpeed

Example

Cutting speed 20% saves roughly half the fuel (0.8³≈0.51).

Did You Know?

'Slow steaming' exploits this cube law — shipping lines cut speed to slash fuel bills and emissions.

marine fuel efficiency

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More in Marine & Nautical

Hull Speed

Theoretical top displacement speed in knots from waterline length in feet.

Speed in Knots

One knot is one nautical mile per hour.

Nautical Mile to Kilometres

Convert nautical miles to kilometres.

Buoyant Force (Archimedes)

Upward force equals the weight of displaced water.

Ship Displacement

A floating ship displaces its own weight in water.

Draft from Displacement

Depth of hull below waterline from displacement and waterplane area.