What is meant by the "GM" of a ship?

Question

What is meant by the "GM" of a ship?

Answer 1

It is one of several measurements when working ship stability calculations.  There are several good sights for learning about stability.  Oddly enough, almost every production boat made is a stability nightmare.

Answer 2

Roll of a Ship in Astern Seas

GM Fluctuations

A. Bruce Dunwoody An effect of astern seas on a ship is to produce fluctuations in the metacentric height (GM) of the ship

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The metacentric height (GM) is the distance between the center of gravity of a ship and its metacenter. The GM is used to calculate the stability of a ship and this must be done before it proceeds to sea. The GM must equal or exceed the minimum required GM for that ship for the duration of the forthcoming voyage. This is to ensure that the ship has adequate stability.

Answer 3

General Manager

Answer 4

GM is the distance from the ship's loaded center of gravity, G, to the metacenter, M. It is an indicator of positive stability or it's ability to right itself when tipped over to one side.