The wheel of the block over which the fall of the block is rove.

Weight of the earth's atmosphere over a unit area of the earth's surface, measured with a mercury barometer at sea level. which corresponds to the pressure required to lift a column of mercury 760 mm.

A position based on estimations of a boat's position using estimated speed, currents, and the last known position/fix - of the boat.

The north end of the earth's axis and also called North Geographic Pole. The direction indicated by 000

Abbreviation for "Master Container Freight Station." See CFS.

To search for a sunken object by towing a grapnel along bottom.

Is one that does not enter into known chemical combination, either with itself or another element. There are four known gases of this type: helium; neon; argon and krypton. or a gas that does not supply any of the needs of combustion.

A structure of wooden or metal supports that make up the mounting for a ship's engine.

Old seafaring term meaning something very difficult or awkward. see Devil

Leave the vessel.

Vessel said to be "on her beam ends" when she is lying over so much that her deck beams are nearly vertical.

A fender made of granulated cork and covered with woven tarred stuff.

A line running from the stern of the boat to a dock or pier when moored.

First attempt at best offer that can be matched

The chamber located on suction side of cap tube, in which freon is evaporated to cause cooling in a refrigeration system.

Sailing in the same direction as the wind with the wind coming from the stern.

A U-shaped fitting closed with a pin across the open ends, the pin sometimes being threaded at one end and sometimes held in place with a cotter pin, and used to secure sails to lines or fittings, lines to fittings, fittings to fittings, anchors to chain, ...

(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.

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 ...

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