UHD]                            NAUTICAL  DICTIONARY.

weigh, seems to be a convenient one for denoting that a ship or
boat is making progress through the water, whether by sails or
other motive power.    See Under Weigh,

UNDER WEIGH, often written UNDER WAY (as in Fal¬
coner's Dictionary of the Marine), A vessel is under weigh
when she weighs her anchor or quits her moorings. See Under
Way.

UNDERWRITER.    See Insurance (Marine), I, 2.

UNFURL (Fr, Deferler).    The reverse of Furl,

UNION. The upper inner corner of a British ensign. The
rest of the flag is called the fly,

UNION DOWN. * The situation of a flag hoisted upside
down, bringing the union down instead of up. Used as a signal
of distress.'    (Dana's Seaman's Manual.)

UNION-JACK. A small union flag formed by the intersection
of the red and white crosses.    See Jack,

UNMOOR (Fr. Demarrer).    The reverse of Moor,

UNREEVE.    The reverse of Reeve,

UNRIG (Fr, Degarnir).    The reverse of Rig,

UNSEAWORTHINESS (Fr, Innavigabilite). The reverse
of Seaworthiness,

UNSHIP.    See Ship,

UPHROE.    See Awning,

UPMAKING, in Shipbuilding, pieces of plank or timber piled
on each other as a filling up; more especially those placed
between the bilge-coads and the ship's bottom, preparatory to
launching.

UPPER DECK.    See Deck,

UPPER MASTS, SAILS, and YARDS.    See Masts,

UPPER WORKS (Fr. Hants, O^uvres mortes). That part
of a vessel's hull which is above the wales.

UP WITH THE HELM, means to put it a-weather.

UVRON, or EUPHROE.    See description of Awning,

VACA. A large canoe with a single outrigger, of Tongata¬
bou. It has a platform amidships, on which is raised a seat for the
native chiefs.    (Diet, de Marine a voiles,)

VALVES (Fr, Soupapes, Valvules). See alphabetical index
to description of Steam Engine, Plate I.

VAN.    ^ The foremost division of a squadron of ships of war.'
See Rear,
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