Nautical words

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Deadweight Cargo. Cargo whose specific gravity is such that a vessel loading it will go down to her marks.

Deadweight Scale. Table, or graph, showing total weight of fuel, stores and cargo, and corresponding mean draught of vessel.

Deadweight Tonnage. Deadweight expressed in tons avoirdupois.

Dead Wind. Wind directly contrary to ship's course.

Deadwood. Flat, vertical surfaces at junction of stem or stern post with keel. Has no buoyant effect.

Dead Work.* Old name for 'Freeboard'.

Deals. Planks, particularly of fir, 7 to 11 in. in width and 2 to 4 in. thick.

Decca Navigator. A radio aid for fixing positions up to at least 300 miles from the transmitter. A master transmitter ashore controls a chain of other transmitters, designated Slaves. All transmit signals continuously. A ship provided with a special receiver can receive these signals, the phase-difference between them being measured by Decometers. The numbers indicated on the Decometers refer to coloured lattice lines printed on

special charts. The ship's position is where the numbered lines cross each other.

Deck. Horizontal flooring, or plating, above bottom of vessel. May be continuous or partial.

Deck Beam. Thwartship member that supports a deck and preserves form of a vessel.

Deck Bridge.* Former name for a navigating bridge.

Deck Cargo. Cargo that must be carried on deck. 2. Cargo that is customarily carried on deck. 3. Cargo actually carried on deck.

Deck Hand. Seaman, other than officer, who serves on deck. Man of 17 years of age, or over, with at least one year's sea service.

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