Cat or Proa?

KRC

Super Anarchist
2,876
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Seattle, WA
It looks to me like a monohull that can turn itself into a proa (maybe even a tri). This would combine the stability of the proa with the relative ease of changing direction of a monohull. However, I don't see a bulb on the keel which says to me that this boat spends most of its time as a proa.

 

HamishMacdonald

Super Anarchist
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I'd call it either a monohull with moving ballast (if the outrigger is meant to be on the windward side) or 2/3 of a trimaran if the outrigger's supposed to be on the leeward side.

 

Presuming Ed

Super Anarchist
11,024
186
London, UK
Think I would call it a tacking proa - not sure though.

Not sure whether you sail with the float to leeward or to windward - I would guess to windward, which gives you a nicer profile on the leeward side of the main hull. Perhaps water ballast in the float up to windward?

Getting the engineering on the beam must be..interesting. As would gybing - when would you slide the beam so that your leeward float comes in next to the hull, and the windward float is extended.

 

HamishMacdonald

Super Anarchist
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When sailing downwind I'd be tempted to sail the boat as a trimaran, with each float half-way out, to stop rolling and let you push the boat harder. This would also make gybing easier.

I'd imagine that tacking would be harder, unless the float/ballast could switch sides seriously quickly.

 
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