A group of points to which rates are made the same as or in relation to rates to other points in group.

A point located en route between two other points.

Forward. The opposite of abaft.

A book containing the official record of a ship's activities together with remarks concerning the state of the weather, etc.

A gas produced by many fruits and vegetables that accelerates the ripening and aging processes.

Said of a vessel when the depth of water can be measured by the lead (within the 100 fathom curve).

A ring or hoop of metal.

Is a unit of work equal to 33,000 foot pounds per minute, 550 foot pounds per second, or 746 Watts.

A large, flat bottomed boat used to carry the mud from a dredge.

(1) A line by which the end of a spar is hoisted or lowered. (2) A line that holds up the boom when it is not being used. (3) A line from the upper mast which controls the height of the spinnaker pole.

A number system used to describe wind forces and sea conditions from 0 for a flat calm to 12 for a hurricane

The horsepower required to compress adiabatically the air or gas delivered by the compressor through the specified range of pressures.

Vessel moves to a new area for a new season.

The use of a sound barrier separating the sound from the receiver.

An automatic or manual device designed to control pressure, flow or temperature.

A strong tropical revolving storm of force 12 or higher. In the northern hemisphere hurricanes revolve in a clockwise direction. In the southern hemisphere these storms revolve counterclockwise and are known as typhoons.

Small stuff seized across a hook to prevent it from unshipping (once hooked, mousing keeps the hook on).

The direction of an object (with reference to you, your ship, another object).

One which blows across a boat's side

A vessel whose bow and stern have drooped. The opposite of sagged.