Weather Current. One which sets towards the wind.

Ebb, ebb-tide. See "Tide."

Fair, wind. A wind which allows a vessel to head her desired compass course.

Fall Off. A vessel falls off, when, without the action of the helm, her head moves away from the wind. See "Come up."

Fill.
Full.
}Sails are said to fill, or to be full, when the wind strikes the rear side, tending to move the vessel ahead.

Flood, flood tide. See "Tide."

Fore and Aft. In classification of vessels, indicates those whose sails, when set, stretch from forward aft; more nearly lengthwise than across. Opposite to square-rigged.

Foremast, fore-topmast, etc. See "Spars."

Foresail, fore-topsail, etc. See "Sails."

Foul, to. To entangle, to collide. A foul anchor, when the cable gets round the anchor.