The British association founded in 1860 to promote the improvement of ships and everything that relates to them.

A large casting located centrally within the drill floor used to impart rotary motion to the drill string, being chain driven from the draw-works.

A positive displacement pump. For each revolution of the pump, a fixed volume of fluid is moved regardless of the resistance against which the pump is pushing.

The rotary bow rudder system is based on the principle of the Magnus Effect. A differential pressure is generated through a fast rotating cylinder operating in the incoming water current, resulting in a thrust effect.

A two-part rope guard with ample overlap on the propeller hub protects the sterntube aft seal against mechanical damage in the event of a rope fouling the propeller.

A vessel with large ro-ro decks and limited passenger facilities. Usually, the superstructure covers part of the upper deck.

NILS HOLGERSSON and PETER PAN are 34,000gt RoPax ferries built by the Bremerhaven yard SSW Fahr-und Spezialschiffbau for Hamburg-based operator TT-Line.

The cargo handling system developed in Finland. It is focused on a 60-tonne capacity flat panel (12.2m x 2.6m) for loading cargo which is supported by four “legs” 850mm from the ground.

Cargo on wheels, such as trucks, trailers or diverse rolling general freight and which can be driven or towed onto a ship.

The modern cargo handling technique first introduced in 1950s. Cargo is literally rolled on board ro-ro ships.

A variety of roll stabilisation systems are available to reduce ship motions and forces which can cause cargo damage, undermine passenger comfort and crew efficiency, and increase resistance.

The difference between unstabilised and stabilised roll angles at resonance in regular sinusoidal beam seas with a specified maximum waveslope and at a specified ship roll damping ratio.

The act of checking the presence of the passengers and crewmembers, e.g. at assembly stations, by reading aloud a list of their names.

Deposition of rocks onto subsea pipelines to provide protection against anchors and fisherman nets when burying pipes is impractical.

A commercial vehicle, semi-trailer, road train, articulated road train or a combination of vehicles, as defined in Assembly resolution A.581(14).

A vehicle on wheels fitted with a tank or tanks intended for transport of gases, liquids or solids by both road and sea modes of transport.

A passenger ship with ro-ro cargo spaces or special category spaces, (SOLAS).

TOR MAGNOLIA and its sisters were built by the German shipyard Flensburger Schiffbau-Gesellschaft for the Danish owner DFDS Tor Line.

Built by Flender Werft at Lubeck, the 12,500dwt SPAARNERBORG is an innovative ro-roship; designed to carry paper and card supplies in specially-manufactured 90t Stora Enso cargo units (SECU).

The highest officer aboard ship responsible for the safety of the ship, crew and cargo. The captain oversees all ship operations, keeps ship records and handles accounts