The Sailor's Word-Book / An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc.

by W. H. Smyth

DOUBLE-CROWN. A name given to a plait made with the strands of a rope, which forms part of several useful and ornamental knots.

DOUBLE DECK-NAILS. See [Deck-nails].

DOUBLE DUTCH coiled against the Sun. Gibberish, or any unintelligible or difficult language.

DOUBLE EAGLE. A gold coin of the United States, of 10 dollars; value £2, 1s. 8d., at the average rate of exchange.

DOUBLE-FUTTOCKS. Timbers in the cant-bodies, extending from the dead-wood to the run of the second futtock-head.

DOUBLE-HEADED MAUL. One with double faces; top-mauls in contradistinction to pin-mauls.

DOUBLE-HEADED SHOT. Differing from bar-shot by being similar to dumb-bells, only the shot are hemispherical.

DOUBLE-IMAGE MICROMETER. Has one of its lenses divided, and separable to a certain distance by a screw, which at the same time moves an index upon a graduated scale. When fitted to a telescope for sea use, as in chase, it is called a coming-up glass.

DOUBLE INSURANCE. Where the insured makes two insurances on the same risks and the same interest.

DOUBLE-IRONED. Both legs shackled to the bilboe-bolts.