The tendency of a boat to move sideways in the water instead of along its heading due to the motion of currents or currents.

To come up more into the wind

The point of equilibrium of the total weight of a containership, truck, train or a piece of cargo.

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

An anchor is said to bite when the flukes dig themselves into the ground and hold firm without dragging.

The pressure that would be produced by stopping a moving stream of liquid or gas.

When the distance between the wave crests is less than normal.

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

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

Said of a vessel's anchor, or cable when the amount of cable out is not more than one-and-a-half times the depth of water.

A compartment forward where the chain cable is stowed.

Any bend or hitch which slips as a result of being improperly tied; an improvised knot which is not a recognized maritime knot as used at sea.

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

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.

A board that can be raised and lowered by pivoting in a watertight box called the trunk or well to increase the draft and lateral area of the hull, preventing the boat from sliding sideways. Unlike a daggerboard, which lifts vertically, a centerboard pivo ...

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

A distress call made by a vessel requiring assistance. These three letters were chosen because they were easy to make and read using Morse Code. Some believe the letters meant "Save Our Ship" or "Save Our Souls".

see Chanty.