A four sided sail bent onto a yard. Similar to a gaff sail, but with a wider throat.

Is a standardized method to determine the carbon formation characteristics of compressor lubricants.

A ring used to attach certain bellow type flexible members of an air actuators to the mounting surface.

A large heavy knot usually made in the end of a heaving line to aid in accurate throwing.

Method of securing a line around a spar by taking the standing part around the spar, then a half hitch around itself and the end tucked three or four times around its own part.

The direction at right angles to a ship's heading or the line of her keel

An illegal form of discounting or refunding that has the net effect of lowering the tariff price. See also Malpractice.

The curved part of a ship's hull where the side and the flat bottom meet.

Any object used to increase the drag of a boat and slow her down. Typically shaped like a parachute or cone opened underwater, drogues decrease a boat's speed in heavy weather. Also see sea anchor.

A horseshoe-shaped or circular reef of coral surrounding a lagoon.

The alternating motion of a boat, leaning alternately to port and starboard; the motion of a boat about its fore-and-aft axis.

Anchor cable is caught around the fluke or an object is caught around the anchor .

A form of steam engine where a piston moves back and forth inside a cylinder, transmitting its motion to a driving shaft by a connecting rod and crank.

The whole crew.

A strong tropical revolving storm of force 12 or higher. In the northern hemisphere hurricanes revolve in a clockwise direction. In the southern hemisphere these storms revolve counterclockwise and are known as typhoons.

Sailing with the motor on and in gear

It is the weight of the column of air existing above the earths surface at 45

A small flat boat, usually inflatable.

The breaking-up of paint into fine particles or droplets by a paint gun using compressed air.

The riding lights required to be carried by vessels at anchor.