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

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

On square-rigged ships, an additional sail set in good weather outside the square sails when the wind was abaft the beam.

Determination of the dutiable value of imported merchandise by a Customs official who follows procedures outlined in their country's tariff, such as the U.S. Tariff Act of 1930.

The maximum rate at which an engine can do work as measured by the resistance of an applied brake. Expressed in horsepower.

An instrument for measuring the amount of air flow of a compressor. Measured in CFM.

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

A running light allowed on some sailboats instead of the normal bow and stern lights. The tricolor light contains the red and green side lights and the white stern light in a single fitting that is attached to the top of the mast.

A multihulled boat with three hulls.

Said of a distant ship when her hull is below horizon and her masts and upper works are visible.

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.

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

An attachment point for another object.

A stated amount over a fixed rate to one point to make a rate to another point.

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.

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 ...

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

An additional extra tax.

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 ...

The post that the rudder is attached to. The wheel or tiller is connected to the rudder post.