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TermDefinition
- Fair When describing conditions such as wind or tidal stream, fair refers to them being advantageous or favourable. In weather terminology, it means(...) Read more
- FairleadA ring, hook or other device used to keep a line or chain running in the correct direction or to prevent it rubbing or fouling. Read more
- FairwayThe main channel in a body of water such as an estuary or river Read more
- Fairway MarkBuoy, post or pillar positioned at safe distance to seaward of a channel. See also Safe Water mark. Read more
- Fathom A nautical unit of measurement that is equal to six feet. Read more
- Did you know? Feeling Blue The phrase "feeling blue" is commonly used to describe sadness or melancholy, and its origins are often linked to nautical(...) Read more
- Fender A fender is a cushioning device used on boats and ships to prevent damage to the vessel or dock when they come into contact, particularly when(...) Read more
- FetchThe distance travelled by the wind when crossing open water. The height of the waves is proportional to the fetch and strength of the wind Read more
- FidA tapered tool used for separating the strands of rope for splicing. Read more
- FixThe position of a vessel as plotted on the chart from position lines obtained by compass bearings, direction finder, echo sounder etc. Read more
- FlaresFlares are pyrotechnics and one of the most effective means of signalling distress and marking your position. There are several types of flare(...) Read more
- Flashing LightA light where there is more darkness than light Read more
- FloodThe period when the tidal level is rising Read more
- FlukeThe wedge-shaped part of an anchor's arms that digs into the bottom. Read more
- Flying Out A sail is flying out in a breeze when it has no tension in the sheets Read more
- Fo'c'sleThe part of the accommodation below the foredeck and forward of the mast Read more
- FogVisibility reduced to less than 1000 metres (approximately 0.5 nautical miles) Read more
- FoghornFog horns are used for sounding the appropriate sound signal whilst in restricted visibility Read more
- Folding PropellerA propeller with folding blades, furling to reduce drag on a sailing vessel when not in use Read more
- Following SeaSeas that are moving in the same direction as the vessel is heading Read more