Cubic feet per minute (cfm) of air required at the inlet to the distribution system.

Electro-mechanical steering device; an instrument designed to control automatically a vessel's steering gear so that she follows a pre-determined track through the water.

On older sailing ships, a heavy piece of curved timber projecting from the bow for the purpose of holding anchors in position for letting go or for securing them after weighing.

To haul on a rope, to haul up tight, to hoist the last possible inch or so.

To turn the boat away from the wind. Also, Fall Off. The opposite of heading up.

(1) The location from which a vessel is steered and its speed controlled; navigation and command center of the vessel. (2) A man made structure crossing a body of water.

A method of storing a sail, e.g., by rolling the jib around the headstay.

An anchor that is designed to bury itself into the ground by use of its plow shape. Also called a plow anchor.

Air pressure

The difference in depth between high and low tide.

The horsepower required to compress adiabatically the air or gas delivered by the compressor through the specified range of pressures.

A brace, usually triangular, for reinforcing a corner or angle in the framework of a structure.

A traditional maritime saying to indicate that it is time for a morning drink, it was generally assumed that in northern latitudes the sun would show above the foreyard of a ship by 11.00 which was approximately the time in many ships of the forenoon "sta ...

Abbreviation for "Cubic Meter" (capital letters).

A method of moving a boat with oars. The person rowing the boat faces backwards, bringing the blade of the oars out of the water and toward the bow of the boat. They then pull the oars through the water toward the stern of the boat, moving the boat forwar ...

When a ship's head or stern pitches suddenly and violently into the trough of the sea.

In wooden ship construction, these were cylindrical pins of oak which were used to secure the planks to her timbers. Pronounced "trennels".

An attachment point for another object.

A multihulled boat with three hulls.

Two short pieces of timber fixed horizontally fore and aft on each side of the lower masthead of a square rigged vessel and used to support the topmast, the lower crosstrees, and the top.