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The upward force exerted by a fluid that opposes the weight of an object immersed in it. Crucial for keeping ships afloat.

The distance between the centre of gravity (G) and the metacentre (M), an indicator of ship's initial stability; the larger the GM, the greater the ship's stability.

The point in a body or system around which its mass or weight is evenly distributed or balanced and through which the force of gravity acts.

An oscillating movement of a ship around its longitudinal axis caused by external forces like waves or wind, which can affect stability.

The angular movement of a ship around its transverse axis, causing the bow and stern to move up and down alternately in a seaway.

The inclination of a ship to one side due to external forces, such as wind or turning, which is not necessarily related to a lack of stability.

The horizontal distance between the centre of gravity and the centre of buoyancy when a vessel is inclined; a moment that tends to restore a vessel to the upright position.

Graphs showing the relationship between ship stability factors (such as metacentric height, buoyancy, etc.) and the vessel's displacement or draft.

The phenomenon where liquids within a ship's tanks or compartments shift, reducing the ship's stability, especially in partially filled tanks.

A permanent inclination of the ship due to the uneven distribution of weight onboard, which can be due to cargo shift or water ingress.

The ability of a ship to return to an equilibrium position after being subjected to external forces, considering the energy needed to displace it from upright.

The angle to which a ship with negative stability will rest in calm water without any external forces acting upon it.

The process by which the amplitude of an oscillation (like rolling) is gradually reduced over time, influenced by the ship's hull design and added structural elements.

The measure of a ship's carrying capacity, including cargo, fuel, passengers, crew, etc., which impacts stability by changing the vessel's draft.

The volume of a ship's hull that is above the waterline, which contributes to the vessel's ability to remain afloat and resist capsizing.

Material (often water) placed in the ballast tanks of a ship to increase stability, trim, or draft, essential for safe operational handling.

Graphs showing the relation between the righting arm (GZ) and the angle of heel for various vessel displacements, vital for analyzing stability across a range of conditions.

The stability of a ship at small angles of inclination, typically related to the metacentric height (GM) and influenced by the distribution of mass.

The condition of a ship's hull and superstructure that prevents water ingress, critical for maintaining buoyancy and stability.