A port designated by the government of a country for duty-free entry of any non-prohibited goods. Merchandise may be stored, displayed, used for manufacturing, etc., within the zone and re-exported without duties.

Pounds per square inch, absolute.

A piece of wood fitted in various places to act as a preventative to chafe.

All naval officers with the rank of rear admiral (or its equivalent) and above.

The same as FOB named inland carrier, except the seller pays the freight charges of the inland carrier.

A large body of water taken aboard (ship a sea).

A compartment on or near the bridge of a ship that contains the steering wheel and other controls, compass, charts, navigating equipment and means of communicating with the engine room and other parts of the ship. Also known as wheelhouse

A synthetic rubber frequently used for vessel and liquid filter element gasket.

To double a vessel's mooring lines.

The gauge pressure at which a safety valve visibly and audibly opens or at setting which a relief valve discharges an unbroken stream of liquid.

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.

Flat bottomed vessel with a shallow draught.

A rail fastened along the inside of the bulwarks of a vessel and pierced to hold belaying pins

(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.

Is a process taking place under constant temperature. To compress the gas from state 1 to state 2, heat must be removed to keep the temperature constant. The pressure change is reciprocal to the change in specific volume.

A bridge that can be raised vertically to allow boats to pass underneath.

Long bars or bolts with a padlock on the end, on which iron shackles could slide, which were used on board ship to confine the legs of prisoners.

The short aftermost raised deck of a vessel.

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

A device actuated by inlet static pressure and designed to open during an emergency or abnormal condition to prevent a rise of internal pressure in excess of a specified value.