(1) The portion of an anchor that digs securely into the bottom, holding the boat in place. (2) The two triangular parts which make up a whale's tail.

A time or a date draft that has been accepted by the buyer (the drawee) for payment at maturity.

Compartment in which clothing for issue to crew is stowed.

A vertical support for guardrails and lifelines.

A compressor belonging to the group of displacement reciprocating compressors.

On larger sailing vessels, the space between the foremast and mainmast where spare spars were stored.

The forward part of the bow which overhangs the keel.

Lying nearly head to wind and stopped, and maintaining this position by trimming sail or working engines.

The study of the earth's waters.

A knot widely used when making a boat fast to a post or bollard.

Customer designated as party paying for services.

An untidy loose end of a rope (or rags).

The method by which a racing yacht may object to the actions of a rival on the basis of a breach of the racing rules. A protest committee will hear both sides, and if the protest is upheld, the offending yacht may be penalized.

A system of reefing a sail by partially furling it. Roller furling systems are not necessarily designed to support roller reefing.

An arc of a circle in which certain types of navigational lights known as sector lights are visible.

Circular metallic elements that ride in the grooves of a piston and provide compression sealing during combustion. Also used to spread oil for lubrication.

A condition of filter element loading in which contaminant spans the space between adjacent sections of a filter element, thus blocking a portion of the useful filtration.

A government office where duties are paid, import documents filed, etc., on foreign shipments.

A shipment loaded into a container at the pier or terminal, thence to the consignee's facility.

A two-masted vessel with foremast square rigged, and mainmast fore and aft rigged. Originally, a ship of brigands, or pirates.