Seaman who was born aboard a warship. As this was once considered to be one of the essentials of the perfect seaman, it has long been a complimentary term.

Net volume actually displaced by the compressor piston at rated machine speed, generally expressed in cubic feet per minute (usually CFM). For multistage compressors, the piston displacement of the first stage only is commonly stated as that of the entire ...

A preparatory order (wait

A two-masted vessel with both masts square rigged. On the sternmost mast, the main mast, there is also a gaff sail

An extension to the tiller allowing the helmsman to steer while hiking. This may be desired for improved visibility or stability.

Metal or plastic pieces attached to a sail's luff that slide in a mast track to allow easy hoisting of the sail.

Hundred weight (United States, 100 pounds: U.K.,112)

The power which is theoretically required to compress a gas under constant entropy from a given inlet pressure to a given discharge pressure. (calculated assuming ideal conditions).

A non-negotiable bill of lading which states a specific identity to whom the goods should be delivered. See Bill of Lading.

Pieces of ice, about the size of a small house, that have broken off a glacier.

A port free of customs duty and most customs regulations.

In lore, the flag flown by a pirate ship - a white skull on a black background with crossed bones below the skull - although there is no evidence that such a flag was ever flown.

1,728 cubic inches. A volume contained in a space measuring one foot high, one foot wide and one foot long.

A liquid piston compressor is a rotary compressor in which a vaned rotor revolves in an elliptical casing, with the rotor spaces sealed by a ring of liquid rotating with it inside the casing.

Abbreviation for "Subject to Particular Average." See also Particular Average.

A book with a record of every occurrence and incident concerning the ship.

An inland location where cargo is received by the ocean carrier and then moved to a coastal port for loading.

To sail towards the direction from which the wind blows by making a series of tacks. A point of sail also known as sailing close hauled.

The position of an object that lies off to one side of the vessel.