(1) Broken water at bow of a vessel making way. (2) Disturbed water made by a propeller or paddle wheel. (3) The rush or sweeping of waves on a bank, shore, or vessel.

A shifting of the wind direction, opposite of backing. Clockwise in the northern hemisphere, counter-clockwise in the southern hemisphere.

A temporary repair or replacement using improvised materials and parts.

Angled frames in the extreme forward or aft ends of a ship which form the sharp ends of the vessel's hull.

Generally speaking the word amidships means in the middle portion of a vessel.

The total gas pressure (static plus velocity).

The temperature of a body referred to the absolute zero, at which point the volume of an ideal gas theoretically becomes zero. (Fahrenheit scale is minus 459.67

(1) A sailing vessel common in the Far East. It's flat-bottomed, high sterned, has square bows, and has two or three masts carrying lugsails. (2) Old and condemned rope.

Bar gauge (similar to the acronym "psig")

Term for disabled vessel that had to fall out of a convoy and thus became easy prey for submarines.

A deviation to move cargo on the return leg of a voyage for the purpose of minimizing ballast mileage and thereby reducing transportation costs.

Not attached to the shore or the ground in any manner. Usually, but not necessarily, moving through or making way through the water.

A sea on the quarter (coming from a side of the stern).

To remove water from the boat by hand, bucket, pump etc.

The falling tide when the water recedes out to the sea and the water level lowers; a period or state of decline.

To let the sheet out slowly while maintaining control.

A navigation instrument used to measure the apparent height of a landmark whose actual height is known, such as the top of a lighthouse. From this information, the ship's distance from that landmark can be calculated.

Sailing on a run with the wind coming over the stern from the same side as the boom (danger of jibing).

A line on the compass aligned with the centerline of the vessel that indicates the vessel's compass heading. Since it points to the vessel's bow, it enables a course to be steered by bringing the lubber's line to the point on the compass card which indica ...

An old name for high waves when they break with a white crest.