VARIABLES. Those parts of the sea where a steady wind is not expected.
VARIABLE STARS. Those which are found to exhibit periodical fluctuations of brightness; of which Algol and Mira Ceti are notable examples.
VARIATION. A term applied to the deviation of the magnetic needle or compass, from the true north point towards either east or west; called also the declination. The variation of the needle is properly defined as the angle which a magnetic needle suspended at liberty makes with the meridian line on a horizontal plane; or an arc of the horizon, comprehended between the true and the magnetic meridian. (See [Annual Variation].)
VARIATION CHART. The well-known chart produced by Halley, whereon a number of curved lines show the variation of the compass in the places they pass through. The admiralty variation chart has been brought to great perfection.
VARIATION OF THE MOON. An inequality in the movement of our satellite, amounting at certain times to 37′ in longitude: it was the first lunar inequality explained by Newton on the principles of gravitation.
VARIATION OF THE VARIATION. Is the change in the declination of the needle observed at different times in the same place.
VEDETTE. One or two cavalry soldiers stationed on the look-out.
VEER, To. To let out, to pay out, to turn or change. Also, to veer or wear, in contradistinction from tacking. In tacking it is a necessary condition that the ship be brought up to the wind as close-hauled, and put round against the wind on the opposite tack. But in veering or wearing, especially when strong gales render it dangerous, unseamanlike, or impossible, the head of the vessel is put away from the wind, and turned round 20 points of the compass instead of 12, and, without strain or danger, is brought to the wind on the opposite tack. Many deep-thinking seamen, and Lords St. Vincent, Exmouth, and Sir E. Owen, issued orders to wear instead of tacking, when not inconvenient, deeming the accidents and wear and tear of tacking, detrimental to the sails, spars, and rigging.
VEER A BUOY IN A SHIP'S WAKE, To. To slack out a rope to which a buoy has been attached, and let it go astern, for the purpose of bringing up a boat, or picking up a man who may have fallen overboard.
VEER AND HAUL, To. To gently tauten and then slacken a rope three times before giving a heavy pull, the object being to concentrate the force of several men. The wind is said to veer and haul when it alters its direction; thus it is said, to veer aft, and haul forward.