Marine & Nautical

Advanced

Metacentric Height

Stability measure; positive GM means the ship rights itself.

Formula

GM = KM - KG

Live Calculator

Members

Variables

GMMetacentric height (m)

KMMetacentre above keel

KGCentre of gravity above keel

Example

KM=8 m, KG=6.5 m: GM = 1.5 m

Did You Know?

Too small a GM makes a ship roll dangerously slowly; too large makes it snap back so sharply it's uncomfortable.

marine stability metacentric

Share this formula

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.