On a wooden vessel, the outermost deck plank covering the gunwale. also called Covering Board

An official signature or seal affixed to certain documents by the consul of the country of destination.

Placing a container where required to be loaded or unloaded.

Another term for a marine railway.

The place at which a shipment is received by a carrier from the shipper.

A set of radio, sound, and visual signals designed to aid in communications between vessels without language problems. It can be used with Morse Code, with signal pennants, and by spoken code letters.

The North Star; visible in the northern hemisphere and indicates the direction of north. In the southern hemisphere the Southern Cross is used to find the direction of south.

The point (speed of sound) at which air flow through an orifice can not increase regardless of pressure drop.

A term describing the seamen of a British warship.

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

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

Small struts or spars extending toward the sides from one or more places along the mast. The shrouds cross the end of the spreaders, enabling the shrouds to better support the mast. Also known as crosstrees in older vessels.

A sudden and violent gust of wind.

A combination of one or more blocks and the associated tackle necessary to give a mechanical advantage. Useful for lifting heavy loads.

That part of the water which is diverted from the main stream of a current and as a result flows in the opposite direction.

Waterproof clothing.

Abbreviation for:- Port of Loading.- Petroleum, Oil, and Lubricants.

A stationary element between stages of a multistage centrifugal compressor. It may include guide vanes for directing the flowing medium to the impeller of the succeeding stage. in conjunction with an adjacent diaphragm, it forms the diffuser surrounding t ...

Once the only method, other than human voice, of passing orders to men on board ship; the instructions to perform certain tasks were conveyed by different notes and pitches on the high-pitched whistle.

An anchor which has become entangled with some object on the bottom, or, on weighing, has it's rode or chain wound around its stock or flukes.