Trimarans - Faster and More Fun!

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Trimarans - Faster and More Fun!
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Catamarans vs monohulls

• At Kavas Yachting we charter a range of
  catamarans and monohulls . Catamarans have a lot
  more space below decks and if youre as
  interested in socialising as you are in sailing,
  you may choose the cat for the luxury and comfort.

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• From a performance perspective, as a general
  rule, monohulls are faster into the wind than
  catamarans yet cats will leave monohulls for dust
  on downwind legs. Generally, cats slide sideways
  (leeway) a lot more when sailing into the wind
  than monohulls, meaning that you will travel
  further on an upwind leg in order to get where
  you are going than on a single hulled equivalent.
  You will travel in a lot more comfort as you do
  so however!

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Froude numbers

• In the 19th Century it was discovered that the
  longer the waterline length of a vessel, the
  faster it can go. A 40ft catamaran will have
  twice the waterline length of a monohull of the
  same length and can go considerably quicker as a
  result. What you pay for in leeway can be
  regained from the sheer speed. This is why
  experienced multihull sailors wont even try to
  point as high as monohulls in a dinghy race but
  will do a Voyage Made Good (VMG) calculation
  that enables them to sail further but much more
  quickly, and thereby to get to the next buoy more
  quickly than the monohull.

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Flatter is faster

• The reason that dinghy sailors have trapezes and
  hike out as they sail is to keep the hull as
  flat as possible in the water. This increases the
  speed of the boat. If you went hull out on a
  cruising catamaran you would be on the way to
  serious trouble! Generally, cats will hardly heel
  over and you will just accelerate in higher
  winds, where on a monohull you could be laid flat
  and broach. The flipside of this is that on a cat
  you dont always know when you are going
  dangerously fast and are at risk of going over.

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• It really does pay to do a multihull sailing
  conversion course before taking a cat out as you
  can learn what to watch for. It will teach you to
  get the best out of the boat at all points of
  sail too.

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Trimarans and performance

• Based on the Froude numbers, and the idea that
  flatter is faster, trimarans are the performance
  sailors vessel of choice. They can sail as close
  to the wind as monohulls with similar leeway
  figures too. The chief sacrifice is space!Being
  so much faster than monohulls, this is one of the
  reasons you will see top yacht racers such as
  Thomas Colville choosing trimarans for their long
  distance world record attempts. The furthest ever
  travelled under sail in 24 hours was 908 miles on
  the trimaran Banque Populaire V. By comparison
  the world record for a monohull was set by the
  100ft Comanche at 618 nautical miles, or nearly
  30 less than the trimaran.

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Weta dinghies

• There is a relatively new class of sailing dinghy
  that can be used for blasting around the buoys or
  for performance day sailing. The 14.5ft Weta
  dinghy is extremely light and fast, yet can be
  broken down very quickly to be stored in a
  similar space to a monohull. It can also be towed
  on a car trailer of a similar size to that of a
  Wayfarer.

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• They are stable and no one needs to dash around
  the boat to set sails as the foresails are all
  roller furling. Unlike the Wayfarer, you can get
  some amazing speeds out of them too the fastest
  speed recorded on a Weta is somewhere around
  19kts, something that the Wayfarer would only do
  on a car trailer!

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• Trimaran dinghies have long been used for
  disabled sailing as you dont have to shift about
  in the cockpit to maintain stability while
  enjoying blasting about the lake or bay. Weta
  took this idea and honed the concept into
  something everyone should consider if they want
  to enjoy the performance of a multihull yet the
  convenience of a monohull.

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The downside

• Most cruising trimarans both take up more space
  on the water (meaning you have to pay more for
  marina fees) and have similar space below to that
  of monohulls. This is why it is unlikely you will
  ever see us at Kavas chartering out a trimaran.

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• For the performance junkie who likes a fix of
  speed, the trimaran is something to seriously
  consider they really are the speed machine of
  choice for the discerning all out racer or
  someone who just likes a good blast on the water

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• To know more information, visit us

http//www.kavas.com/