(1) A longitudinal crack in a mast or other spar. (2) The shivers of a sail when sailing too close to the wind. (3) As a verb, to let it out.

GMT for short. Greenwich Meridian Time, also known as Universal Time or Zulu time. A time standard that is not affected by time zones or seasons. It is the time used by navigators in celestial navigation.

A keel that runs the length of the boat.

Chemical species slated to replace CFCs in the near future.

Near or toward the shore

A form used to acknowledge receipt of cargo and often serves as basis for preparation of the ocean bill of lading.

Abbreviation for "Trailer Load."

Metal fitting attached to the hull that supports and aligns the aft portion of the propeller shaft.

Hinged extension of the tiller which allows the skipper to control the tiller while hiking or sitting forward.

An adjustable section of the rudder that allows the rudder to be corrected for lee helm or weather helm.

The space between any decks.

The compressor is started automatically, depending on demand. Control panel is energized with no "pre-start" cycle required, as pre-lubrication pump and buffer (seal) air are always "on". A state of pre-start exists. Steam turbine compressors are "slow-ro ...

Net volume actually displaced by the compressor piston at rated machine speed, generally expressed in cubic feet per minute (usually CFM). For multistage compressors, the piston displacement of the first stage only is commonly stated as that of the entire ...

A point of sail where the boat is sailing away from the wind, but not directly downwind; Sailing with the wind coming from any direction from abeam to on the quarter, with the bow approximately 135 degrees to the wind source and the sails let out nearly a ...

A language of "dots" and "dashes" used to send messages, either sound using radio waves, or light using a searchlight or Aldis lamp.

To remove a reef from a sail and hoist the sail aloft

The actual work required to compress and deliver a given gas quantity, including all thermodynamic, leakage and fluid friction losses. It does not include mechanical losses.

The forward curve of the stem of a ship.

Extending a sail using a whisker pole

A warehouse authorized by Customs to receive duty-free merchandise.