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

To spill the sails is to take the wind out of the sails, either by heading up into the wind, or by easing the sheets to the point where the sails can hold no wind.

A dock line leading forward or aft, to prevent a vessel from moving ahead or astern. The after bow spring line is attached near the bow and runs aft, where it is attached to the dock. The forward quarter spring line is attached to the quarter of the boat, ...

An imaginary sphere surrounding the globe that contains the sun, moon, stars and planets.

A small naval sword worn by midshipmen or their equivalents when in full dress uniform.

The deck chest in which the bos'n keeps his deck gear.

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 certified document showing the origin of goods; used in international commerce.

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

Customer designated as party paying for services.

a filter element intended to be discarded and replaced after one service cycle.

The same as FOB named inland carrier, except the buyer pays the transportation charge and the seller reduces the invoice by a like amount.

Bread that was supplied to ships before bakeries were introduced on board.

(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.

The forward part of the bow which overhangs the keel.

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

A very high wind. Also called "Snotter"

Loose and broken ice in bays, or along exposed edges of floes.

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 short length of chain, usually 15 fathoms (90 feet). (Method of measuring chain.)