On a square-rigged ship, the yards are square by the braces when they are at right angles to the fore-and-aft lines of the ship.

A pair of vertical wooden or iron heads on board ship, used for securing mooring or towing lines. Similar to dock bollards.

On a bellow type air actuator, that part of the flexible member forming an annular protrusion larger than the O.D. of the end retainers or bead rings.

Fast boat used for passenger and cargo traffic in fairly sheltered waters.

A traditional term in the British Navy for serving out an additional tot of rum or grog to a ship's crew. In sailing ship days the main brace was spliced (in terms of drink) in very bad weather or after a period of severe exertion by the crew.

Elevated structure from which coal and other cargoes can be loaded into a vessel. Name is also given to a landing-place, or loading-place.

Port where cargo is unloaded and enters a country.

A "C" shaped fitting which can be slipped over the boom, for example, when the sail has been roller reefed to allow the boom vang to be reattached.

The difference in pressure between any two points of a system or component.

Seller is responsible for goods and preparation of export documentation until actually placed aboard the vessel.

A device for mounting cylinders.

A flag signaling that a ship is about to sail and that all should report on board. It is International Code Flag "P".

A low vertical lip or raised section around the edge of a cockpit, hatch, etc. to prevent water on deck from running below.

Openings in a ship's hull for ventilation, light and other purposes.

(1) A small coastal inlet generally protected from the worst of the prevailing winds. (2) A thin, hollowed line cut along a yacht's sheer below deck level and traditionally gilded.

Finely-divided water swept from crest of waves by strong winds.

The process of declaring the importation of foreign-made goods into the United States for use in the United States.

On steam vessels has responsibility for the boilers, on diesels, the evaporators and the auxiliary equipment.

In a wheel, such as a steering wheel, a spoke is a rod that extends from the hub outwards to the rim.

Small line consisting of several loosely twisted yarns.