Ship's boat kept ready for immediate lowering while at sea. When used for life-saving, it was called an "accident boat" or lifeboat.

Dangle a man from one of the yard arms, sometimes by the neck, if the man was to be killed, and sometimes by the toes, if he was merely to be tortured. A severe punishment used aboard sailing ships long ago. Today, a reprimand.

Relay to all others in order (a signal repeated from one ship to the next astern in column).

A form of wear in which seizing or tearing of the gear or bearing surface occurs.

A frame used to support the boom when the sail is down.

See Insurance, Particular Average.

The one who steers the boat.

A party responsible for the payment as evidenced by the given instrument. Under letters of credit, the payer is the party on whom the draft is drawn, usually the drawee bank.

Unit of free air flow rate. Normal cubic meter per hour. The air in the following conditions:1.013 bar(a) of pressure; 0 degrees Celsius of temperature and 0% of relative humidity .

Surrounded by land.

A framing of metal fitted over an opening in a deck, with glass or plexiglass inserted for the admission of light into a cabin, engine room, etc.

Man or boy employed in sailing deep-water craft. Word is sometimes loosely used to include men who go to sea. Used officially to denote a seaman serving on deck.

An analytical method of assessing machine health by quantifying and examining ferrous wear particles suspended in the lubricant or hydraulic fluid.

A rail surrounding the poop deck.

A stopper used to prevent water from entering the hawse hole in heavy weather.

Said of a vessel when caught between ice on both sides.

Breaking away of a mass of ice from a glacier or iceberg.

A labyrinth type filter having the active surfaces continuously splashed with oil. Most pollutants are absorbed by the oil which when circulated releases its pollutants, which sink by gravity to the bottom of the oil pan.

A unit used when measuring atmospheric pressure. 33.86 millibars.