Outhaul

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The outhaul on a US Yachts US 22 sailboat. This design uses a braided steel cable, with a swaged thimble and clevis to attach to the sail clew grommet. US Yachts US 22 sailboat Vesper outhaul 1133.jpg
The outhaul on a US Yachts US 22 sailboat. This design uses a braided steel cable, with a swaged thimble and clevis to attach to the sail clew grommet.

An outhaul is a control line found on a sailboat. It is an element of the running rigging, used to attach the mainsail clew to the boom and tensions the foot of the sail. It commonly uses a block at the boom end and a cleat on the boom, closer to the mast, to secure the line. [1] [2]

The outhaul is loosened to provide a fuller camber or tightened to give the sail foot a flatter camber. Depending on the wind, this will increase or decrease boat speed. [3]

Sailboat designer and sailing theorist, Frank Bethwaite, recommended that the outhaul, along with the other sail controls on a racing sailboat, should be knotted and the boom marked with the settings for different wind speeds. [4]

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References

  1. Donaldson, Sven (1994). Basic Sailing Skills. Gloucester, Ontario: Canadian Yachting Association. p. 117. ISBN   0-920232-17-5.
  2. Donaldson, Sven (1992). Advanced Sailing Skills. Gloucester, Ontario: Canadian Yachting Association. p. 130. ISBN   0-920232-19-1.
  3. Smith, Lawrie (1985). Tuning Your Dinghy. West Sussex: Fernhurst Books. p. 51. ISBN   0-906754-18-6.
  4. Bethwaite, Frank (1993). High Performance Sailing . Camden, Maine: International Marine. p.  209 and 291. ISBN   0-87742-419-5.