A light showing an unbroken light over an arc of the horizon of 360 degrees. An anchor or riding light is an all-round light.

A receptacle which serves to store compressed air for heavy demands in excess of compressor capacity.

The quantity of goods that may be imported without restriction during a set period of time.

The cone-shaped shield at the top of the smokestack.

A thermal expansion valve.

the attraction to, and retention of particles in, a filter medium by electrostatic forces, or by molecular attraction between the particles and the medium.

Reinforced cringles or thimbles in the sail designed to hold the reefing lines when reefing the sail.

(1) Describing a boat that lacks stability. (2) A small dinghy or launch used to transport crew and equipment from shore to a larger boat (3) One who serves as a precautionary standby, such as a line tender

A short oar. To scull, is to impel a boat by one oar at the stern.

Sailing close-hauled

The pressure of a system or device measured from absolute zero.

A commission issued, licensing the commander of a privately owned ship to cruise in search of enemy merchant vessels. see Privateer.

A component on a compressed air line that provides wide are coverage with a thin sheet of air. Also amplifies compressed air flow, reduces noise. Used in blowing, cooling. Also known as air knife.

The ratio in percentage of the time that the equipment is in operation to the total working time.

Saluting

A general term for a floating craft that carries passengers, cargo or both

A method of preventing the ends of a line from unlaying or fraying by turns of small stuff, stout twine or seizing wire with the ends tucked.

A landing wharf or pier; a dike at a river s mouth.

Is a compact, low mass unit giving smooth, non-vibrating power. Several types include vane, piston, percussion and turbine type motors

A line used to hoist or lower a sail, flag or spar. The tightness of the halyard can affect sail shape.