Any boat built to certain standards or rules so that is like all others in the same class.

An anchor or weight, permanently attached to the sea floor, with a buoy going to the surface, used to hold the boat in a certain area.

An arbitrary filter efficiency rating.

An area of the North Atlantic east of the Bahamas where a powerful eddy in the water causes Sargasso weed to collect in vast quantities and float on the surface.

A gap unintentionally left uncovered while painting or varnishing.

Supporting braces made into a right angle, used for strength when two parts are joined.

Recovering and utilizing the heat content of the compressed air.

Is the ratio of actual capacity to piston displacement, stated as a percentage.

Are those constituents in the suction gas that cannot be condensed to a liquid with the cooling medium available.

A black ball visible in all directions, displayed in the forward part of a vessel to indicate that the vessel is anchored.

A sturdy railing or elevated guard rail around the deck at the stern. also known as Pushpit

The area between opposing shipping lanes, restricted to most navigation except for crossing with caution

A vessel which, according to the applicable Navigation Rule, has right-of-way. Also known as the "stand on" vessel.

Said of the anchor when just clear of the bottom (leaving or moving).

Carry over of particles or contaminant from the filter or other filter materials into the clean side of the air flow.

Sink by filling with water.

A positive displacement air compressor which has no oil injected into the compression chamber for lubrication, cooling or sealing

To install the sails on the boom or the forestay.

A right claim against the guarantors of a loan or draft or bill of exchange.