To bind together in order to increase tension or to prevent from blowing loose.

The headings of a sailboat in relation to the wind, i.e., upwind, close reach, reach, broad reach, downwind.

SOnar Navigation and Ranging - A device which emits pulses of high frequency sound which are reflected by any solid object they encounter. The time from the emission of the pulse and the arrival of its returning echo is measured, giving a range to the obj ...

Heavy-duty wire used to lower heavy instruments overboard from the trawl winch.

The pressure at which a pressure operated valve begins to pass a gas.

The distance between frames.

Sideward force created by a spinning propeller.

A small boat designed to be rowed by use of its oars. Some dinghies are rowboats.

To ascertain the proper course to be steered to make the desired point or port. Shark's mouth

Machine which receives dry bulk cargo. It is used for stowing sugar,ores and minerals in the holds.

Compartment in which clothing for issue to crew is stowed.

Lloyds open form

Division of the circumference of the magnetic compass card into thirty-two points, each of 11

An all around white light displayed at night by a ship when she is anchored.

Part of the standing rigging that helps to support the mast laterally by running from the top of the mast to the side of the boat. Sailboats usually have one or more shrouds on each side of the mast. Some people call them side stays

is an ideal process that may be stopped and made to retrace its steps and restore to the systems or surroundings all work and heat previously removed. It is frictionless.

The state of a vessel when she is so loosened as to droop at each end.

Flat bottomed vessel with a shallow draught.

The compartment at the bow of the vessel

To sail too close to the wind so that the sails start to luff.