For gauging purposes a transverse section including all longitudinal members such as plating, longitudinals and girders at the deck, side, bottom, inner bottom and longitudinal buklheads.

International Convention on Oil Pollution Preparedness,Response and Co-operation, IMO

A gauge that measures air flow as a percentage of capacity, used in rotary screw compressors as an estimator during modulation controls.

Slang name for the Q Flag. Also an old term for yellow fever.

(1) A body of salt water. A very large body of fresh water. (2) The condition of the water around a boat. Heavy seas for example.

Cargo more than eight feet high which thus cannot fit into a standard container.

To untie.

Said of a vessel when stopped and lying near the wind in heavy weather. See Heave To

The course of a vessel after magnetic variation has been considered, but without compensation for magnetic deviation.

To come alongside.

The ability of a fluid that is insoluble in water to separate from water with which it may be mixed in the form of an emulsion.

Having no sails up. In heavy weather the windage of the mast and other spars can still be enough to move the boat.

A sliding type of bearing having either rotating or oscillatory motion and in conjunction with which a journal operates. In a full or sleeve type bearing, the bearing surface is 360 degrees in extent. In a partial bearing, the bearing surface is less than ...

Anti-clockwise circular motion. Left-handed ropes are coiled down in this way.

Annual publication of astronomical data for the use of navigators.

As tight as can be pulled by hand.

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

In the days of tall ships the barometer was a glass vessel with a thin stem. The fluid in the glass (in most cases water) would move up and down the stem as the pressure of the surrounding atmosphere changed. These movements were used to predict changes i ...

A lubricating oil made with synthetic base stocks.

Small cask used for carrying drinking water in a boat.