A large foresail which extends aft behind the mast.

A boat owner's private pennant.

The most common type of sail used today, a triangle-shaped mainsail defined by the mast and one horizontal boom perpendicular to the mast.

See Heave To

A small boat intended to be used only for short sails or racing.

Sea water used for ballast, let into the double bottom, or into a water-ballast tank, or trimming tanks.

A short-sea vessel which transfers cargo between a central "hub" port and smaller "spoke" ports.

Is one in which the space occupied by the mixture is saturated with water vapor at the mixture temperature.

Pockets in a sail where battens can be placed to stiffen the sail.

To make secure

A hole in the hull for mooring lines, cable, or chain to run through.

A term used to describe the hot gas pressure on the outlet side of the refrigeration compression.

Packages loaded on a pallet, in a crate or any other way that enables them to be handled at one time as a unit.

The line where the water comes to on the hull of a boat. Design waterline is where the waterline was designed to be, load waterline is the waterline when the boat is loaded, and the painted waterline is where the waterline was painted. Actual waterline is ...

The direction to which a compass points. Magnetic north differs from true north because the magnetic fields of the planet are not exactly in line with the north and south poles. Observed differences between magnetic and true north is known as magnetic var ...

The energy in foot pounds required to compress polytropically and to transfer one pound of a given gas from one pressure level to another.

The total rate from the point of origin to final destination.

A prisoner sold in the slave market. He was forced to serve in the war galleys, where he pulled on one of the oars.

A weight attached to a line used to determine depth by lowering it into the water.

A small tapering flag, which can be used for identification or communication.