Steel disc, that is dogged down over a porthole to secure against breakage of the glass and to prevent light from showing through.

Structural pieces running fore and aft between the beams.

Rules for letters of credit drawn up by the Commission on Banking Technique and Practices of the International Chamber of Commerce in consultation with the banking associations of many countries. See Terms of Payment.

In sailing, to be lifted by a wind shift that allows your boat to be lifted closer to the wind where by it allows you to sail a shorter distance to the next mark, buoy or finish line

A pilot with a license stating that they are qualified to guide vessels in a particular area.

A small free-moving submersible designed for exploring the ocean depths.

A small crane that projects over the side of the boat to raise or lower objects (such as smaller boats) from or to the water.

An air flow caused by a fan that draws air through the heat exchanger core in a uniform pattern to dissipate the sensible heat.

An order to cease (stop).

Combination minimum pressure valve and check valve.

Small staysail located between the foremast and mainmast.

Secure hatches and loose objects both within the hull and on deck.

Capable of keeping out water.

Finite Element Analysis.

That part of a shaft or axle that rotates or angularly oscillates in or against a bearing or about which a bearing rotates or angularly oscillates.

A piece of trim, usually wood, used to cover and often decorate a portion of the boat, i.e., caprail.

A propeller drawn through the water that operates a meter on the boat registering the speed and distance sailed

Alternatively letting the sails draw, then spilling wind so as to keep a vessel more or less in one place until space is available, marking time.

To store a yacht away on land for the winter

Nautical name for an anchor. Originally, was a stone used as an anchor.