When a perfect gas flows through a throttling with constant inlet and outlet pressures, the temperature of the gas is the same before and after it flows through the throttling. There is a temperature drop, however, during the passage of gas through the th ...

In order to obtain the clean bill of lading, the shipper signs a letter of indemnity to the carrier on the basis of which may be obtained the clean bill of lading, although the dock or mate's receipt showed that the shipment was damaged or in bad conditio ...

A sail control used to change the athwartships lead of the jib sheet by pulling the sheet toward the centerline of the boat.

ACRONYM - Actuator

A small jib set high on the headstay of a double headsail rig.

A compartment in which fuel is stored; fuel consumed by the engines of a ship

Lying almost beam on to strong winds and being driven before them while under bare poles (without sails up). The helm is lashed so as to point the vessel into the wind, but it continually falls away because of the pressure of the wind. It is a technique f ...

Sundays, holidays, included

Auxiliary engine

Combined supply and anchor-handling ship. Seismic ship: Conducts seismic surveys to map geological structures beneath the sea bed.

Construction made by placing several platform flats end to end in a ship.

To stop a boat and maintain position (with some leeway) by balancing rudder and sail to prevent forward movement, a boat stopped this way is "hove to"; such as when in heavy seas. The idea is to bring the wind onto the weather bow and hold the ship in tha ...

A cleat that attaches to the backstay over the cockpit, usually used for hanging a lantern

The top spoke (usually marked) on the steering wheel when the rudder is centered.

(1) A cargo carrying vessel, usually without an engine, towed or pushed by a tug. Small barges for carrying cargo between ship and shore are known as lighters. (2) Also a term in sail racing - a boat which forces its way illegally between another contesta ...

U.S. Customs' master computer system, "Automated Commercial Systems."

The quality, state or degree of being acid. In oils, acidity denotes the presence of acid-type constituents whose concentration is usually defined in terms of neutralization number.

States that the pressure of a gas, at constant volume, varies directly with the absolute temperature.

Heavy longitudinal timbers fastened over the keelson. The timbers of the bow and stern are fastened to the deadwood.

The U.S. Customs' "Automated Manifest System."