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DAM to DEAD-WORK
DAM
DAVIT
DAYS-WORK
DEAD-EYE
DEAD-LIGHTS
DEAD-RECKONING
DEAD-RISING, or RISING-LINE of the floor
DEAD-WATER
DEAD-WOOD
DEAD-WORK
DECKS to DEPTH of a sail
DETACHMENT of a fleet or squadro to DOCK-YARDS
DOG to DOWN-HAUL-TACKLE
To DOWSE to DRIVING
DROP to DUNNAGE
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DEAD-RECKONING
DEAD-RECKONING, (estime, Fr.) in navigation, the judgment or estimation which is made of the place where a ship is situated, without any observation of the heavenly bodies. It is discovered by keeping an account of the distance she has run by the log, and of her couse steered by the compass; and by rectifying these data by the usual allowances for drift, lee-way, &c. according to the ship's known trim. This reckoning, however, is always to be corrected, as often as any good observation of the sun can be obtained.
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© Derived from Thomas Cadell's new corrected edition, London: 1780, page 96, 2003
Prepared by Paul Turnbull
http://southseas.nla.gov.au/refs/falc/0412.html