The degree to which all the forces on a boat are symmetrical so the vessel sails with just a slight weather helm.

Navigation and Inspection Circular (US Coast Guard)

To let out a line or sail slowly; to slacken or relieve tension on a line; to take pressure off.

To go aboard the vessel; to put onboard a vessel.

A rope spliced into the end of a block and used for making it fast to rigging or spars. Such a block is called a tail-block.

CFM flowing through the compressor inlet filter or inlet valve under rated conditions

When all the sails are shaking.

To untie.

Cargo which has been booked but does not arrive in time to be loaded before the vessel sails. See also "Windy Booking."

Intimate mixture of oil and water, generally of a milky or cloudy appearance. Emulsions may be of two types: oil-in water (where water is the continuous phase) and water-in-oil (where water is the discontinuous phase).

A solid wharf or structure built of stone along the edge of a harbor used for loading and offloading of cargo, and embarkation and disembarkation of passengers.

To remove or disassemble gear after it is used.

A wind shift that forces a boat to sail below its mean wind course.

To windward, in the direction of the eye of the wind; toward the wind; in the direction from which the wind is coming

Sixteenth-century term for a sea distance at which high land could be observed from a ship. Varied between 14 and 22 miles according to average atmospheric conditions in a given area.

The air compressor continues to run, usually at full RPM, but no air is delivered because the inlet is either closed off or modified, not allowing inlet air to be trapped.

Those frames of a ship's hull which are equal in area, one forward and one aft of the ship's center of gravity.

The International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978.

Sling of various types used for lifting vehicles on to and off general cargo ship.s

To repair, clean or paint the hull.