1. Up through the 19th century, a deck aboard a ship that was primarily used for the mounting of cannon to be fired in broadsides. 2. On smaller vessels (of frigate size or smaller) up through the 19th century, the completely covered level under the upper deck, even though in such smaller ships it carried none of the ship's guns. 3. On marine seismic survey vessels, the lowest deck on the ship, which carries the seismic source arrays, consisting of air guns arranged in clusters. 4. In naval slang, to fabricate or falsify something; in modern usage, meaning especially to falsify documentation in order to avoid doing work or make present conditions seem acceptable without having made a real effort to improve them.

Related Terms

BUMPKIN

The spar projecting from stern of ship

AIR COOLER

A factory-encased assembly of elements whereby the temperature of air passing through the device is reduced.

TRAMP FREIGHTER

A cargo ship engaged in the tramp trade.

AIR INFILTRATION

The leakage of air into a room through cracks in doors, windows, and other openings.

CLEAN ROOM

A facility or enclosure in which air content and other conditions (such as temperature, humidity, and pressure) are controlled and maintained at a specific level by special facilities and operating processes and by trained personnel.

CORDAGE

Ropes in the rigging of a ship

OUTDOOR AIR

Air taken from outdoors and, therefore, not previously circulated through the system.

SPREAD

The divergence of the air stream in a horizontal or vertical plane after it leaves the outlet.

WEATHER SIDE

The side of a ship exposed to the wind.

AIR

A substance containing by volume approximately 78 - 79% nitrogen; 20.95% oxygen, 0.94% argon, traces of carbon dioxide, helium, etc.

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