ope 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.

DOUBLE-JACK. _See_ JACK-SCREW.

DOUBLE-LAND. That appearance of a coast when the sea-line is bounded by
parallel ranges of hills, rising inland one above the other.

DOUBLE-SIDED. A line-of-battle ship painted so as to show the ports of
both decks; or a vessel painted to resemble one, as used to be frequent
in the Indian marine.

DOUBLE-STAR. Two stars so close together as to be separable only with a
telescope. They are either optically so owing to their accidental
situation in the heavens, or physically near each other in space, and
one of them revolving round the other.

DOUBLE-TIDE. Working double-tides is doing extra duty. (_See_ WORK
DOUBLE-TIDES.)

DOUBLE UPON, TO. _See_ DOUBLING UPON.

DOUBLE WALL-KNOT. With or without a crown, or a double crown, is made by
intertwisting the unlaid ends of a rope in a peculiar manner.

DOUBLE-WHIP. A whip is simply a rope rove through a single block; a
double whip is when it passes through a lower tail or hook-block, and
the standing end is secured to the upper block, or where it is attached.

DOUBLING. (_See_ RANK.) Putting two ranks into one.

DOUBLING A CAPE. In navigation, is to sail round or pass beyond it, so
that the point of land separates the ship from her former situation.

DOUBLING-NAILS. The nails commonly used in doubling.

DOUBLING UPON. In a naval engagement, the act of inclosing any part of a
hostile fleet between two fires, as Nelson did at the Nile. The van or
rear of one fleet, taking advantage of the wind or other circumstances,
runs round the van or rear of the enemy, who will thereby be exposed to
great danger and confusion.

DOUBLOON. A Spanish gold coin, value 16 dollars: L3, 3_s._ to L3, 6_s._
English.

DOUGH-BOYS. Hard dumplings boiled in salt water. A corruption of
_dough-balls_.

DOUSE, TO. To lower or slacken down suddenly; expressed of a sail in a
squall of wind, an extended hawser, &c. Douse the glim, your colours,
&c., to knock down.

DOUT, TO. To put out a light; to extinguish; _do out_. Shakspeare makes
the dauphin of France say in "King Henry V.:"--

"That their hot blood may spin in English eyes,
And dout them."

DOUTER, OR DOUSER. An extinguisher.

D'OUTRE MER. From beyond the sea.

DOVER C