The distance between a rope's adjacent strands, giving a measure of the tightness of the lay. The shorter the distance, the harder the lay. When a line has been overused and the lay has become slack, it is said to be slack-jawed.

A thin, flexible wooden or plastic strip inserted into a pocket (batten pockets) on the back part (leech) of a sail to stiffen it and assist in keeping its form.

A pear-shaped, grooved metal fitting around which an eye splice is made

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

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".

Thread - Unified national coarse.

To bring to a sudden stop.

Measuring point for compressor acceptance test. Pressure before an orifice or nozzle, downstream of compressor discharge.

To sail against the prevailing wind and seas.

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 sliding type of bearing having either rotating or oscillatory motion and in conjunction with which a journal operates. In a full or sleeve type bearing, the bearing surface is 360 degrees in extent. In a partial bearing, the bearing surface is less than ...

A pump which is used to deliver air to the aquarium. The pump pushes air through silicon tubing and to air stones or other aquatic decor. They are also an essential for UGF's (undergravel filters). An air stone is placed in each clear tube. When the air b ...

To remove from a ship. To remove an item from its place.

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

A metallic structure on which a compressor or other machine is mounted.

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

A unit of electrical current or rate of flow of electrons through a conductor. One volt across one ohm of resistance causes a current flow of one ampere. One ampere is equal to 6.25 x 1018 electrons per second passing a set point in a circuit.

The motion of air relative to a body in it.

A Short line used to attach one thing to another - a short rope or cord that secures or attaches an item onboard a boat, usually for keeping it attached to the boat

The tendency of the strands of a line to fray out at the ends.