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AC - DG - HL - MR - S - TZ
 
Downhaul
  Rope used to lower the sails using a spar (boom or jib boom).
 
Drag
  Part of the aerodynamic force in the direction of the wind.
 
Drop keel
  Centreboard pointing down in the water in the centre of the yacht, which limits its sideways movement in the wind. This movement is called drift.
 
Eager
  Is said of a boat that tends to luff.
 
Ease off
  Reduce the tension on the sails and rigging.
 
Ebb
  Tide going out.
 
ETA
  Estimate Time Arrival.
 
Extrados
  Bearing plane facing the current.
 
Falling off to leeward
  Falling off to leeward leads to an unintentional heave to.
 
Fender
  Inflated object of cylindrical or spherical shape used to protect the yacht from hitting another craft or the quayside when mooring.
 
Flag
  It may be the flag of the nation or represent a letter or number, in which case, it is used to communicate.
 
Flood tide
  The tide is coming in.
 
Flow
  currents which are directed by a contour (sail or keel) .
 
Fluid
  Element possessing a certain number of properties such as the ability to follow the shape of the container.
 
Foot
  Edge of the sail from the tack point to the clew. It is kept rigid along the boom in the case of the mainsail.
 
Foot/feet
  This corresponds to a unit of measure 0.3048m. A 60-footer measures 18.28m.
 
Foresheet
  Rigging used to set the foresail with the help of the reefs. On small sailing craft, the mainstay is used instead.
 
Forestay
  Line linking the boom and the stempost to balance out the force exerted by the stay.
 
Gangway
  Side passages on deck.
 
Gennaker
  The fore triangular sail with a large surface that is between the spinnaker and the genoese jib.
 
Genoese jib
  Fore sail that overlaps the mast when on a tack.
 
Gore
  Angle of the sails. There are three of them, the tack, the clew and the peak.
 
Guardrail
  Piece of wood or metal fixed on either side of the mast to keep the shrouds away (3 floors on Adrien).
 
Guy
  Metal rod fixed vertically which holds the guard rail in place.
 
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