ACRONYM Actual cubic feet per minute.

The machine by which, when dropped to the bottom, the vessel is held fast.

The underside of the deck, viewed from below the ceiling.

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

A man employed in a vessel of war to take charge of a storeroom; as, boatswain's yeoman the man that has charge of the stores, of rigging, etc.

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.

A sliding or hinged opening in the deck, providing people with access to the cabin or space below; an opening in a boat's deck fitted with a watertight cover.

Abbreviation for "Beneficial Cargo Owner." Refers to the importer of record, who physically takes possession of cargo at destination and does not act as a third party in the movement of such goods.

A single inlet compressor with the impeller or impellers mounted on an extended shaft of the driver.

A letter of credit that contains a limited engagement clause which states that the issuing bank promises to pay the beneficiary upon presentation of the required documents at its counters or the counters of the named bank.

Established the standard basis for adjusting general average and stated the rules for adjusting claims.

(1) An old term to denote a lazy sailor who is of little use on the ship. (2) Damaged goods, especially provisions.

Above decks; without concealment of deceit (out in the open).

A component made up of a cylinder barrel, end covers, a piston rod, a steel or stainless steel piston. A device which induces action or motion with compressed air being the medium through which the power is transmitted.

The owners of a ship are entitled to payment as freight for merchandise returned through the fault of either the consignees or the consignors. Such payment, which is over and above the normal freight, is called backfreight.

Sometimes called a pulsation damper this is a small receiver fitted on the inlet or discharge of a reciprocating compressor. The device is designed to remove the resonance from the compressor thereby reducing noise.

An order to haul away or to heave around a capstan (pull).

Abbreviation for "General Department Store Merchandise." A classification of commodities that includes goods generally shipped by mass-merchandise companies. This commodity structure occurs only in service contracts.

Seaman's call to attract attention.

Warehouse Withdrawal for Transportation (WDT)Allows merchandise that has been withdrawn from a bonded warehouse at one port to be transported in bond to another port, where a superseding entry will be filed.