The result of vertical forces acting on a ship as a result of local differences between weight and buoyancy. The total of these forces should be zero, otherwise change of draft will occur.

The system installed on FSOs and FPSOs for off-loading of crude oil to shuttle tankers.

An external load that produces bending stresses within a body.

Bearings which support the propeller shaft.

A test to measure the ductility of a metal sample by folding it over a specified radius. No cracking or other defects should be found.

The after end of ship.

Bulk carrier equipped with a belt unloading system.

The discharge system used on self-unloading bulk carriers.

Bellows-type expansion piece which is fitted into a pipeline to allow expansion and contraction resulting from temperature changes.

The bow frame forming the apex of the intersection of the forward sides of a ship. At its lower end it is rigidly connected to the keel.

A system used for of steering the ship. It is in constant use when the ship is underway, and any failure or malfunction may result in disaster.

A hydraulically-operated mechanism which folds the second pair of covers in a four-panel folding hatch cover.

A nozzle pivoting on a vertical axis and fitted around a screw propeller. Steering nozzles create steering forces by means of a deflected jet.

An electric motor and its associated electrical equipment in the case of electric steering gear, or an electric motor and its associated electrical equipment and connected pump in the case of electrohydraulic steering gear...

A bell used aboard ship as a means of announcing time at regular intervals, as a signal when the ship is anchored in a fog, or as an alarm in emergencies.

The equipment through which orders are transmitted from the navigation bridge to the steering gear power units.

According to SOLAS requirements, the steering gear compartment shall be readily accessible and, as far as practicable, separated from the machinery spaces.

An expression which actually means “before starting discharging of cargo”.

The machinery, rudder actuators, steering gear power units and the means of applying torque to the rudder stock necessary for eff ecting movements of the rudder.

A structure which forms the base of an engine upon which the bearings and frame are mounted.