Letter of credit in which the specified payment is guaranteed by the bank if all terms and conditions are met by the drawee and which cannot be revoked without joint agreement of both the buyer and the seller.

The smaller of two mating or meshing gears; can be either the driving or the driven gear.

The pressure which overcomes the total resistances in a system. It includes all losses as well as useful work.

Funds sent by one person to another as payment.

Person who decoys a seaman from his ship and gains money by robbing and, or, forcing him on board another vessel in want of men.

(1) A piece of equipment used to drive piles into the ground. (2) Name given to a ship which because of her short length, cannot ride two consecutive waves, and pitches violently into the second.

A watertight cockpit with scuppers, drains, or bailers that remove water.

The after rail at the stern of a ship. Also called a Pushpit

Shipper's instructions to carrier for forwarding goods; usually the triplicate copy of the bill of lading.

A knot formed by taking the strands of the end of a line and tucking them over and under each other to prevent them from unraveling.

Sailing term used to indicate a sailing vessel underway with no headsails set.

A sail attached to the boom at the tack and clew, but not along the foot, or a fore-and-aft sail which is set without a boom.

Surface resistance to relative motion, which slows down movement and causes heat.

A block and tackle attached to the boom and the deck to prevent the main from gybing when sailing downwind

Location where cargo enters the care and custody of carrier.

A metal fitting on the mast that the stays attached to the mast; a fitting on the mast for securing rigging.

To sail as close as possible to the wind. Some boats can point better than others, sailing closer to the wind.

To subject petroleum oil to heat for breaking down into lighter products.

Heat exchangers for removing the heat of compression between stages of a compressor.

ACRONYM - MATERIAL SAFETY DATA SHEETS