Abstract
This chapter discusses the moment of statical stability. When a ship is inclined by an external force, the centre of buoyancy moves out to the low side, parallel to the shift of the centre of gravity of the immersed and emerged wedges, toward the new centre of gravity of the underwater volume. The force of buoyancy is considered to act vertically upwards through the centre of buoyancy, even as the weight of the ship is considered to act vertically downwards through the centre of gravity. These two equal and opposite forces produce a moment which capsizes the ship. This moment is referred to as the moment of statical stability and is defined as the moment to return the ship to the initial position when inclined by an external force. The chapter further discusses the moment of statical stability at a small angle of heel, and at a large angle of heel.
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