(1) The mast section next above the topmast and and below the royal mast. (2) The yard supported by that mast. (3) The third lowest square sail. It is stretched between the topgallant yard and the top yard.

A rotating fitting used to keep a line from tangling.

The short deckhouse or main hatchway which is raised above the level of the cabin top or coachroof.

Break horse power

The proper return port of a discharged seaman.

The unloading of a container or cargo van.

Is a unit of work equal to 33,000 foot pounds per minute, 550 foot pounds per second, or 746 Watts.

General name for a broad, flat-bottomed boat used in transporting cargo between a vessel and the shore. The distinction between a lighter and a barge is more in the manner of use than in equipment. The term "lighter" refers to a short haul, generally in c ...

The gears that reduce engine speed to propeller speed.

A cylinder used to carry rotating machine parts, such as pulleys and gears, to transmit power or motion; such as a propeller shaft.

Said of a seaman who has retired from sea service.

A squally wind sometimes accompanied by rain, observed as a dark cloud stretched across the horizon.

Sailor's term for soot or ashes which sometimes fell into food while it was being cooked.

(1) The underside of the hull that sits in the water (2) The ocean floor

Ratio of the pressure of a gas to its critical pressure, in like units.

The dimensionless number obtained when the difference between maximum and minimum instantaneous shaft speeds during one period is divided by the arithmetic mean of these two.

At or towards the stern or rear of a ship.

In trouble.

is the design (built-in) compression ratio for a rotary unit having this feature