A very strong sail used in stormy weather. It is loose footed, being attached to the mast, but not the boom. This helps prevent boarding waves from damaging the sail or the rigging.

A floating log

A reversible propeller mounted in a tunnel running through the ship/s hull to give movement athwart-ships.

Half of a sphere. On the globe hemispheres are used to describe the halves of the earth north or south of the equator.

Seaward, a safe distance from shore; To keep an offing is to keep a safe distance away from the coast because of navigational dangers, fog, or other hazards.

The vertical absorption of a liquid into a porous material by capillary forces.

A large, swelling wave. To surge a rope or cable, is to slack it up suddenly where it renders round a pin, or round the windlass or capstan.urge ho! The notice given when a cable is to be surged.

Line led forward, from quarter of a vessel, to prevent her from moving astern.

A card marked in degrees and having sightings on it that is used to take bearings relative to the ship, rather than magnetic bearings as taken with a compass.

A boat that is comfortable in rough weather.

A docking line going at approximately a right angle from the boat to the dock, preventing movement away from the dock.

Material that stores energy, although mass will also retain coolness. The thermal storage capacity of a material is a measure of the material's ability to absorb and store heat.

Is a positive displacement rotary compressor.

Letters, numbers, and other symbols placed on cargo packages to facilitate identification. Also known as marks.

A colorless odorless very poisonous gas formed by the incomplete burning of carbon. Found in some ambient air conditions.

The recognized abbreviation for the International Chamber of Commerce Terms of Sale. These terms were last amended, effective July 1, 1990.

Industry-related: A point at which freight moving from one territory to another is interchanged between transportation lines.

Rope made of the fibers of the hemp plant and used for small stuff or less than 24 thread (1.75 inch circumference). (Rope is measured by circumference, wire by diameter.)

A beam which supports a deck.

A stick with a blade in the end of it used to propel a small boat through the water; The act of using a paddle to propel a boat.