An elastomeric bellow with specially designed metal end closures used in place of pneumatic or hydraulic cylinders. A device which induces action or motion with compressed air being the medium through which the power is transmitted.

Method of reeving a tackle in order to gain the maximum increase in power.

An adsorption type desiccant.

Boards fixed vertically to a boat to prevent leeway

A light line with a weight on the end used for heaving from ship to shore (or ship to ship) when coming alongside. A heavier cable or hawser is attached which can then be hauled over using the heaving line.

A curved metal spar for handling a boat or other heavy objects.

The farthest aft.

Ad valorem.

A ladder of rope with rungs, used over the side.

Charge assessed by a pier or dock owner against freight handled over the pier or dock or against a steamship company using the pier or dock.

A component on a compressed air line designed to increase in magnitude the flow by releasing small amounts of compressed air at high velocity through an internal, ring shaped nozzle. This column of air released through the front creates a vacuum behind, t ...

In square-rigged vessels, short lines at the lower end of the futtock shrouds used to bring in the shrouds tighter to give room to brace the yards at a sharper angle when sailing close hauled.

Down or downwards; as in "Lay alow!"; opposite of Aloft.

A permanent loop spliced in the end of a line, sometimes around a thimble.

Used for lashing down sails, awnings, etc., a series of round turns where the end is passed over the standing part and under the bight and pulled taut on each turn.

The situation of a vessel when listed over by the wind to such an extent that she does not recover.

The removal of heat from a gas after compression is completed.

Atmosphere normale de reference. The term ANR is not usually applied to cfm, it is the new European replacement for FAD and usually follows the metric measurement of air flow, such as Cu Meters per Minute

Line 12 inches or 300 mm long, painted amidships on both sides and parallel to the load lines.

A method causing a liquid or gas to condense on the surface only of an adsorbing material.