The principal sail that is set on the main mast.

A platform with or without sides, on which a number of packages or pieces may be loaded to facilitate handling by a lift truck.

A timber or rib of a ship running from the keel to the side rail; the transverse strengthening members in a ship's hull that extend from the keel to the deck or gunwale. The frames form the shape of the hull and act as a skeleton on which the hull plankin ...

A movement of equipment from an origin rail ramp to a destination rail ramp only.

Kilograms per square centimeter absolute.

A metal air-tight tank built into a boat to insure flotation even when the boat is swamped.

A warning from aloft (heads up).

A distinctive fixed reference point that can be used for navigation.

To repair, clean or paint the hull.

An international goods classification system for describing cargo in international trade under a single commodity-coding scheme. Developed under the auspices of the Customs Cooperations Council (CCC), an international Customs organization in Brussels, thi ...

Intimate mixture of oil and water, generally of a milky or cloudy appearance. Emulsions may be of two types: oil-in water (where water is the continuous phase) and water-in-oil (where water is the discontinuous phase).

A track or groove in the back of the mast to which the sail is attached by means of lugs or the bolt rope.

Black diamond, ball, and cone shapes hoisted on vessels during the day to indicate restricted movement, ability, or type. For example three balls means aground.

Is the suction pressure attained by an ejector or positive displacement vacuum pump at zero capacity with the suction absolutely blanked off.

Is a technique for predicting whether water will tend to dissolve or precipitate calcium carbonate. If the water precipitates calcium carbonate, scale forming may result. If the water dissolves calcium carbonate, it has a corrosive tendency.

A salt or ester of carbonic acid.

Metal or wooden peg inserted in gunwale of a boat for an oar to heave against when rowing without crutch or rowlock.

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

Fixed ports that do not open which are placed in the deck or cabin to admit light.

Boards used to close the companionway.