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F .... Fahrenheit. Nautical Abbreviations
Fair wind .... A favourable wind from the point of view of the course required.
Fairing .... A structure added to a vessel to streamline it.
Fair Isle .... The name given to a sea area situated off the North coast of Scotland including the area surrounding the Fair Isles.
Faeroes .... The name given to the sea area off out from the North of Scotland surrounding the Faeroe Islands.
Fairlead .... A devise such as an eye or a pulley used to guide a rope to prevent cutting or chafing.
Fairlead track .... A track on which a fairlead is mounted so that the position can be adjusted.
Fairway .... A navigable channel into a harbour.
Fall .... That part of a rope that is hauled upon, in a tackle.
Fall off .... When the bow of a vessel moves away from the wind.
False tack .... The pretence of changing tack in an effort to mislead an opponent during competition.
Fast, make .... To secure or belay a line or sheet.
Fastnet .... The name given to a sea area situated off the South coast of Ireland.
Fathom .... A unit of measurement for the depth of water; one fathom is equal to 6 feet.
Fenders .... A flexible, air filled devise, usually made from plastic, which is hung over the side of a vessel to protect it, and to lessen the effect of minor impacts while moored.
Fend off .... To push another vessel away or hold a vessel off the dock.
Fetch .... To sail close hauled without having to tack.
Fetch .... The distance traveled by wind or waves across open water.
Fetch .... The distance a vessel has to travel to reach open water.
Fiddles .... Raised edges of horizontal surfaces below deck which prevent objects from sliding off when the boat heels.
Figure of eight .... A Knot used as a stopper to prevent the loose end escaping.
Fin keel .... A single fin shaped ballasted keel attached centrally to the bottom of a sailing vessels hull.
Finistere .... The name given to a sea area situated to the West of the Bay of Biscay.
Fisher .... The name given to a sea area situated off the North West coast of Denmark.
Fisherman's .... A type of anchor. Anchor Types.
Fix .... A position as determined by two or more position lines.
Fl .... Flashing Light. Nautical Abbreviations    Navigation Lights.
Flaw .... A gust of wind.
Flashing .... A light is said to be flashing when the periods of dark are longer than those of light. Navigation Lights.
Flood tide .... A rising tide.
Flotation bag .... An inflatable bag used to give additional buoyancy to a waterlogged vessel.
Flotsam .... Floating wreckage or rubbish.
Fluke .... The barb of an anchor. Anchor Types.
Fluxgate compass .... An electronically operated compass.
Fly bridge .... An outside steering position situated on top of the highest area of the coach roof or superstructure.
Flying .... A jib that is set without being hanked to the forestay.
Flying fifteen .... A keeled international class dinghy.
Fog-horn .... An audible devise used to warn of a vessels presence in poor visibility. Sound Signals.
Foils .... The underwater parts of a vessel such as the rudder, centreboard or keel, etc.
Folding grapnel .... A folding type or anchor. Anchor Types
Following sea .... A sea that is travelling in the same direction as a vessel.
Foot .... The bottom edge of a sail, between the tack and the clew.
Fore .... The front, the forward part of a vessel.
Fore-and-aft .... In line from bow to stern, on or parallel to the center line.
Fore cabin, Foc'sle .... A cabin situated in the bow of a vessel.
Fore deck .... The area of the deck situated at the forward end of the vessel.
Foreguy .... The downhaul for the spinnaker pole. Usually on larger vessels.
Forepeak .... The area in the extreme forward part of a vessel, in the angle of the bows.
Foresail .... A triangular shaped sail which is set forward of the mast.
Forestay .... A stay which runs from the masthead to the bow to prevent backward movement of the mast.
Fore triangle .... The triangle measured for rating purposes. Formed by the mast, forestay and deck.
Forth .... The name given to a the sea area situated off the South East Scotland.
Forties .... The name given to a sea area situated between the East coast of Scotland and southern Norway.
Forward .... Near or towards the bow.
Foul .... To get the propeller jammed with rope or weed.
Foxtrot .... The letter F in the phonetic alphabet. Phonetic Alphabet.
Fractional rig .... A rig where the forestay and hence the jib or foresail is attached only partway up the mainmast.
Free .... When the wind moves further to the aft it is said to free.
Freeboard .... That part of the hull between the water level and the gunwale or deck.
Freer.... .... The wind is said to be freer when it shifts to the aft relative to the vessel.
Free standing mast .... A mast that is not supported by any rigging, sometimes used an smaller dinghies
Free wind .... When the wind moves further to the aft.
Full .... A sail that has plenty of draft is said to be full.
Furl .... To gather a sail on or round a spar or stay.

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