A line used to hoist or lower a sail, flag or spar. The tightness of the halyard can affect sail shape.

A compressor belonging to the group of dynamic compressors. Characterized by having its flow in the axial direction.

Navy term meaning Officer of the deck.

Standing or running (adjustable) wire rigging that supports the mast from the stern; a wire mast support leading aft to the deck or another mast

The direct sailing line in which a racing mark or buoy can be fetched while sailing the desired course

International Labor Organization; Based in Geneva, it is one of the oldest components of the UN system of specialized agencies and has been involved over the years in appraising and seeking to improve and regulate conditions for seafarers. In its unusual ...

A strong tropical counterclockwise revolving storm the southern hemisphere. In the northern hemisphere these storms revolve clockwise and are known as hurricanes.

The line by which a boat is connected to a mooring buoy; a short rope hanging from a spar having at its free end a spliced thimble or a block. Sometimes called "Pennant".

A sea which is traveling in the opposite direction to that of the boat

For gauging purposes a transverse section including all longitudinal members such as plating, longitudinals and girders at the deck, side, bottom, inner bottom and longitudinal buklheads.

A suspension of fine solid or liquid particles in a gas.

A type of anchor with a heavy inverted mushroom shaped head. Mushroom anchors are used to anchor in mud and other soft ground.

The ship's water closet (toilet or wash-room). The upper edge of a quadrilateral sail.

A mythical creature, half human and half fish.

Is the pressure exerted by a vapor confined within a given space. The vapor may be the sole occupant of the space, or may be associated with other gases.

The carbon left after evaporating an oil under controlled conditions.

The person who is in charge of a vessel and legally responsible for it and its occupants.

Standard pressure and temperature. See standard air.

A rope used for towing or, mooring.

International data interchange standards sponsored by the United Nations. See UN/EDIFACT.