Volumes and Weights

Gross Register Tonnage or Gross Tonnage (GRT / GT)

Net Register Tonnage

Underwater volume or carene ( m3)

Represents the moulded underwater volume of a ship; it is calculated as the displacement( m3) minus the contribution of the shell plating, propeller and rudder;

Displacement ( m3)

The volume of the immersed hull including shell plating, propeller and rudder;

Displacement D or ∆ (ton)

The weight of the volume of the water displaced by the vessel; it equals the total mass of the ship;

Lightship weight ( ton)

The weight of the vessel including the regular inventory( anchors, lifesaving appliances, lubricating oil, paint etc. ) without taking into consideration cargo, fuel or crew;

Deadweight ( ton)

Cargo capacity ( ton)