A very strong sail used in stormy weather. It is loose footed, being attached to the mast, but not the boom. This helps prevent boarding waves from damaging the sail or the rigging.

Difference in air or gas temperature between the outlet of the intercooler and the inlet of the compressor.

American Shipbrokers Association

A heavy colorless gas that does not support combustion but is formed by the combustion and decomposition of organic substances. Found in some ambient air conditions.

Machines in which air or gas is compressed by the mechanical action of rotating vanes or impellers imparting velocity and pressure to the flowing medium. (Raise the pressure of the air by converting the energy from the velocity of the air to pressure.)

Ties used to tie up the sails when they are furled to the boom or yards.

A plot of expected operating characteristics (e.g.., discharge pressure versus inlet capacity, shaft horsepower versus inlet capacity).

Above sea level

A single block such as a snatch block used as a fairlead to bring a line in a more favorable direction.

Nautical equivalent of ceiling

Water of sufficient depth to allow a boat to travel through it.

A method of drying natural gas.

A floating log

Abbreviation for "Over, Short or Damaged" Usually discovered at cargo unloading.

Opposite of absorption or adsorption. In filtration, it relates to the downstream release of particles previously retained by the filter.

Seaman's scornful name for any lead of a rope by which effort is lost or wasted.

Is singular for media and is the material...paper, wire, cellulose or a combination... from which the filter element is made and which does the actual filtration or separation.

To fill the seams of a vessel with pitch.

The official who is in charge of a harbor, enforcing all its applicable regulations.

A wind moving from the land to the water due to temperature changes in the evening, where the temperature of the land falls below the sea temperature.