A small portable compass.

Sling of various types used for lifting vehicles on to and off general cargo ship.s

Said of a vessel when stopped and lying near the wind in heavy weather. See Heave To

A deck exposed to the wind and sea.

A life-threatening condition where there is loss of body heat; the greatest danger for anyone in the water. As the body loses its heat, body functions slow down, and this can quickly lead to death.

Gross tonnage is the basis on which manning rules and safety regulations are applied, and registration fees are reckoned. Port fees are also often reckoned on the basis of GT and NT. GT and NT are defined according to formulas which take account, among ot ...

The International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978.

(1) A body of salt water. A very large body of fresh water. (2) The condition of the water around a boat. Heavy seas for example.

A single turn of rope when a rope is coiled down.

The course of a vessel after magnetic variation has been considered, but without compensation for magnetic deviation.

A sighting taken for celestial navigation at noon, when the sun is at its highest point in the sky.

A projecting aperture at the end of a tube, pipe etc. serving as an outlet for compressed air. Reduces the demand on the compressor by generating the highest thrust and volume for the lowest possible air consumption.

Rolling a vessel, that is slightly ice-bound, so as to break the surface ice around her. May sometimes be done when a vessel is lightly aground, but not ice-bound.

The part of a rotating element that counteracts any inherent thrust developed by the impellers.

CFM flowing through the compressor inlet filter or inlet valve under rated conditions

The air compressor continues to run, usually at full RPM, but no air is delivered because the inlet is either closed off or modified, not allowing inlet air to be trapped.

To go aboard the vessel; to put onboard a vessel.

A support fixed on the front part of a chassis (which is retractable); used to support the front end of a chassis when the tractor has been removed.

A machine employing two or more stages.