To permanently join two pieces of rope. It will not pass through a block since it increases the diameter

States that the volume of a gas, at constant pressure, varies directly with the absolute temperature.

Abnormal, rapid reciprocating movement of the disc on the seat of a pressure relief valve.

A device for mounting cylinders.

The mount and housing for the compass, usually located on the wheel's pedestal.

(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.

Place where cargo is loaded and leaves a country.

Cost of goods, marine insurance and all transportation (freight) charges are paid to the foreign point of delivery by the seller.

See "Overland Common Points."

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

The opening between the jib and the mainsail. Wind passing through this opening increases the pressure difference across the sides of the mainsail, helping to move the boat forward.

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.

Created by the US Congress in 1974 to regulate exchange trading in futures. URL:.

A cone-tipped metal rod designed to be driven downward into deposited snow or firn. The measured amount of force required to drive the rod a given distance is an indication of the physical properties of the snow or firn.

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

A prime mover which is suitable only for operating the deck machinery in a light loaded condition. Example: Reeling in of an untensioned rope, or topping an unloaded derrick.

The spiral grooves between the strands of rope after it has been laid up.

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.

An additional duty imposed to offset export grants, bounties or subsidies paid to foreign suppliers in certain countries by the government of that country for the purpose of promoting export.

Large ships dating back to the 17th century typically with three masts carrying rectangular sails mounted on horizontal spars called yards. A sailing-ship rig with rectangular sails set approximately at right angles to the keel line from horizontal yards.