The headings of a sailboat in relation to the wind, i.e., upwind, close reach, reach, broad reach, downwind.

The westerly distance in an arc from Aries, measured as an angle at the pole or as the intercepted arc of the equinoctial between the hour angle of Aries and the hour angle of the body.

Is a process taking place without any heat exchange with the surroundings.

A storage tank where sewage is stored until it can be removed to a treatment facility.

Sufficient movement through the water to allow the boat to be controlled and steered by the rudder.

The most important commercial measurement when the intrinsic weight of the cargo is so low that the ship becomes full without being loaded to the cargo line. Is expressed in cubic metres or cubic feet.

To know and to be able to recite the points of a compass from north to south to north again, both clockwise and counter-clockwise.

Brass work, polished (also varnished wood work in yachts).

In spray painting applications, spray equipment which delivers material at a low pressure of no more than 10 PSI (at the air cap), however, with greater volume of air.

Areas of corrosion.

A small boat designed to be rowed by use of its oars. Some dinghies are rowboats.

A recess into the keel or a framework fixed to the keelson in which the mast is placed

Abbreviation for "Standard Transportation Commodity Code."

An announced warning of an approach of a storm.

Fresh water mixed with sea water, having a density between 1,000 and 1,026 kg/cm3

A thick serge jacket worn by seamen while keeping watch at night or in stormy weather.

The difference between the diameter of a shaft rod, etc., and that of the hole in which it works.

An all around white light displayed at night by a ship when she is anchored.

A ported enclosure which directs the flow of a gas through the filter element.