metacentre

/ˈmɛtəsɛntə/

IPA: /M EH0 T AH0 S EH1 N T ER0/

noun
  1. 1

    A midway point between a ship's centre of buoyancy when upright and its centre of buoyancy when tilted; it must be above the centre of gravity to enable a tilting ship to return to an upright position.

Source: https://en.wiktionary.org/wiki/metacentre