The meridian from which longitude is measured eastwards or westwards. The longitude of the prime meridian, passing through Greenwich, England, is 0

Sideward force created by a spinning propeller.

Are of two kinds: First, those built in permanently and part of the ship's structure, used for the reception of water ballast, fuel, oil, or liquid cargo; second, those constructed specially and removable if necessary. These vary greatly in size and shape ...

Damage Free Car. Boxcars equipped with special bracing material.

Is a process taking place without any heat exchange with the surroundings.

Shippers load and count. All three clauses are used as needed on the bill of lading to exclude the carrier from liability when the cargo is loaded by the shipper.

Abbreviation for "Standard Transportation Commodity Code."

Swing of the boom from one side of the ship to the other when the tack is changed.

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

A ship builder, or one who works about a ship. Does wood carpentry on the ship and keeps ships faired. Builds launching ways and launches ship.

(1) To stop moving. (2) Usually air travels smoothly along both sides of a sail, but if the sail is not properly trimmed, the air can leave one of the sides of the sail and begin to stall. Stalled sails are not operating efficiently.

A line used to control the tension along a sail's luff in order to maintain proper sail shape.

The difference between the diameter of a shaft rod, etc., and that of the hole in which it works.

A recess into the keel or a framework fixed to the keelson in which the mast is placed

A hard-chined dinghy with flared sides, considered a useful weight-carrying work boat.

A thick serge jacket worn by seamen while keeping watch at night or in stormy weather.

A tall buoy used as a navigational aid.

Sufficient movement through the water to allow the boat to be controlled and steered by the rudder.

A term applied to the gas found on the high pressure side of the refrigeration system.

On a square-rigged ship, the ropes which hang below a yard upon which the topmen stand while aloft furling or reefing a sail. They were supported by ropes from the yard known as "stirrups".