The Captain of a vessel. Highest officer aboard ship. Oversees all ship operations. Keeps ships records. Handles accounting and bookkeeping. Takes command of vessel in inclement weather and in crowded or narrow waters. Handles communications.

A solid wharf or structure built of stone along the edge of a harbor used for loading and offloading of cargo, and embarkation and disembarkation of passengers.

A small portable compass.

A fix taken by visually observing the location of known landmarks.

A wind shift that forces a boat to sail below its mean wind course.

To repair, clean or paint the hull.

A rope used for securing any movable object in place

The increase in pressure in the discharge header that develops as a result of flow after the pressure relief device opens

A boat is double banked, when two oars, one opposite the other, are pulled by men seated on the same thwart.

Sea water used for ballast, let into the double bottom, or into a water-ballast tank, or trimming tanks.

Search of a vessel, by Customs authorities, for unreported goods.

(1) To throw, as to heave a line ashore. (2) An upward pull on a line; to lift (3) The rise and fall of a vessel in a seaway.

A container frame fitted to accommodate two or more separate tanks for liquids.

Kilograms per square centimeter absolute.

The compression of an air actuator (air spring) below its design height.

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.

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

To bagpipe the mizzen, is to lay it aback by bringing the sheet to the weather mizzen rigging.

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.

A machine employing two or more stages.