A strong vertical post used to attach lines for towing or mooring.

In a dynamic compressor, surge limit is the capacity below which the compressor operation becomes unstable.

British standard pipe parallel.

A metal appliance consisting of a thread and screw capable of being set up or slacked back and used for setting up on rigging.

Maritime area usually specified by range of ports in which a vessel may operate

To drag the bottom for an anchor. Also, large oars used in small vessels to force them ahead.

A curved or vertical timber that when paired with a floor or additional futtocks makes the frame of a wooden ship.

The helmsman.

Putting cargo into a container.

The structure on deck where the donkey engine is located.

A propulsion system for boats with an inboard engine operating an exterior drive, with drive shaft, gears, and propeller; also called stern-drive and inboard/outboard.

A large, flat bottomed boat used to carry the mud from a dredge.

Transverse or longitudinal partitions separating portions of the ship ("walls" in a ship).

Electro-mechanical steering device; an instrument designed to control automatically a vessel's steering gear so that she follows a pre-determined track through the water.

In water transportation, the time it takes between the arrival of a vessel and its departure.

To put in place of another; i.e., when an insurance company pays a claim it is placed in the same position as the payee with regard to any rights against others.

An expression used to the crew to indicate that the boat is about to tack.

Any object used to increase the drag of a boat and slow her down. Typically shaped like a parachute or cone opened underwater, drogues decrease a boat's speed in heavy weather. Also see sea anchor.

A gangway or gangplank. Used to cross from one ship to another, or from a ship to a pier.

The area of calm which lies inside the trade winds near the equator.