The energy in foot pounds required to compress adiabatically and to deliver one pound of a given gas from one pressure level to another.

In railcar or container shipments, the weight of the empty railcar or empty container.

A shore that wind blows onto; it is best to stay well off a lee shore in a storm

Stout line or cable fore and aft around the deck of the boat to keep crew from falling overboard.

The highest operating pressure the system or component is designed to withstand.

To temporarily sew the ends of two ropes together for rendering through a block. Also to grip together parts of a fall to prevent running out. To marry strands to prepare for splicing.

To ease out or slacken a line, chain or cable or let it run in a controlled manner.

The overlapping of wooden planks, used to form the outer surface of a boat's hull.

A unit of power equal to 1,000 watts.

A location that is not sheltered from the wind and seas. An open location would not make a good anchorage.

A card marked in degrees and having sightings on it that is used to take bearings relative to the ship, rather than magnetic bearings as taken with a compass.

Cargo moving under Customs control where duty has not yet been paid.

Bell used for striking the half hours of each watch.

Time saved, reward for quick turnaround in dry cargo only.

An indicator that signals pressure conditions.

A gigantic sea animal.

Place where a ship should report when passing i.e. when approaching a port.

To turn the boat head-to-wind so as to go about on the opposite tack

In general, a person employed in a sea-going vessel. In some cases, applied to a seaman who works on deck.

The cover of a scuttle-way or small hatchway which leads to to or from a store room, cabin of small craft, crew's quarters, the forecastle or fore peak.