The pressure that would be produced by stopping a moving stream of liquid or gas.

A built in mechanical device to recover a portion of the power consumed by a constant speed centrifugal compressor when operating at reduced capacity or reduced pressure rise, or both.

The magnetic compass used by the navigator as a standard.

The location from which the boat is steered, usually in the middle or at the stern of the boat.

A spring line tied from the boat to chain rode, usually near the water's surface. It helps disperse tension forces. It also prevents damage to the boat by ground tackle and can help in the retrieval of the ground tackle in heavy weather.

Statement on the condition of the vessel. The sufficiency of a vessel in materials, construction, equipment, crew and outfit for the trade in which it is employed. Any sort of disrepair to the vessel by which the cargo may suffer, overloading, untrained o ...

A metal fitting with an arm that uses a spring to close automatically when connected to another object.

A volume. Cubic meters per second.

Is a positive displacement reciprocating compressor using a flexible membrane or diaphragm in place of a piston.

An old naval saying to indicate those young men who, through birth or connection, were able to enter the Royal Navy without examination. Their subsequent promotion was assured.

A common measurement of the internal volume of a ship with certain spaces excluded. One ton equals 100 cubic feet; the total of all the enclosed spaces within a ship expressed in tons each of which is equivalent to 100 cubic feet.

In sailboat racing, a tactical maneuver to lock in a competitor by tacking on them in close proximity so they can not tack from under your boat and they start to lose speed due to your sails blocking their sails.

Specially designed for the transport of chemicals.

Said of a vessel's anchor, or cable when the amount of cable out is not more than one-and-a-half times the depth of water.

Scoop like devices used to direct air into and ventilate a boat.

Sails that lie in the direction of the ship's length and whose luffs abut the masts or are attached to stays.

A bend or hitch used to attach a line to a ring or spar so that by pulling the end of the line, the hitch will come free. This is done by passing a bight of the line under the other part so that when strain is applied the bight is jammed. A pull on the en ...

The operation of secretly bringing goods into a country to avoid paying duty on the goods. Also applies to illicit goods.

A marine hardware store.

The triangle formed by the masthead, the base of the mast at deck level, and the lower end of the headstay.