The turbulent effect of air on the lee side of a sail when trimmed in too far.

A structure erected to display a characteristic light as a warning of danger at sea and as an aid to navigation.

A wooden wedge fitting into a drainage hole in the bottom of a boat for the purpose of draining the boat when she is out of water.

To measure the depth of the water with a lead. Also said of a whale when it dives to the bottom.

Depth measured; the number indicating depth on a chart; the process of measuring fuel or water in ships' tanks. A ship is thought to be "in soundings" when she is inside the 100 fathom line, and "off soundings" when she is outside that line. ...

A sudden squall of wind accompanied by lightning.

see Chanty.

BTU. The amount of heat required to raise the temperature of one pound of water one degree Fahrenheit under set conditions of temperature and pressure.

Fluid cooling agent.

When U.S. Customs orders shipments without entries to be kept in their custody in a bonded warehouse.

A filter element whose medium consists of a series of uniform folds and has the geometric form of a cylinder, cone, disc, plate ... Synonymous with "convoluted" and "corrugated".

The highest navigation bridge. It usually includes an added set of controls above the level of the normal control station for better visibility.

To carry sail to the full limit of strength of masts, yards, and tackles.

The last part of a rope or last link in an anchor chain.

See CFS.

freezing of a piston ring in its groove in a piston engine or reciprocating compressor due to heavy deposits in the piston ring zone.

The basic unit of measurement for lumber. One board foot is equal to a oneinch board, 12 inches wide and one foot long. Thus, a board ten feet long, 12 inches wide, and one inch thick contains ten board feet.

A valve which enables pressure to be reduced, or kept constant at a desired level.

A blast of from 4 to 6 seconds' duration.

Snappy, seamanlike; a smart ship is an efficient one.