The athwartship portion of a hull at the stern. The flat, vertical aft end of a ship.

A course steered by the compass that has been corrected for variation and deviation

Break; e.g., the line parted under strain

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

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

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

The topmost planking in the sides, next below the gunwale, often thicker than other planking.

The locker in which the bos'n keeps his deck gear.

The way a boats spars and sails are arranged. To rig a vessel is to fit her with masts, spars, sails and running and standing rigging; term is also used to mean the setting up a device, e.g., to rig a lifeline, a tackle, etc

A sound signal device (not necessarily mechanically operated).

Any point of sail with the wind coming from the side of the boat. If the wind is coming from directly over the side, it is a beam reach. If the wind is coming from forward of abeam it is a close reach. If the wind is coming from over the quarter, it is ca ...

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

A publication predicting the time and height of high tide and low tide.

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.

Wooden swells on each side of the after end of a boom, having sheaves through which to lead the leech reefing pendants.

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 metal appliance consisting of a thread and screw capable of being set up or slacked back and used for setting up on rigging.

The ratio of the isothermal power consumption to shaft input.

The normal working pressure for an air motor (6 bar).

Screen of cloth or other material to give the crew protection against the weather, wind and water spray.