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

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.

Said of a seaman who has retired from sea service.

The rank held by a naval seaman.

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 ...

Break horse power

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

Special vessels employed in exploration for, development of or continuous production of, subsea oil and gas.

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

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

To retire from a life at sea and settle ashore.

In trouble.

Toward the shore

Tanks used for the storage of air discharged from compressors. They serve also to damp discharge line pulsations.

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

To make fast. To bend a sail, is to make it fast to the yard. To bend a cable, is to make it fast to the anchor. A bend, is a knot by which one rope is made fast to another.

When a vessel fills with water and sinks.

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