That's right SkipperMac, catamarans make such good use of their space, most of it is corridors.....
Except for the condominium part on top of the two corridors......
But in general I agree - for the total volume and square metre-age of a same length tri and cat, the cat will have more 'usable' space.
But it's the trimaran
I'd rather sail offshore
But it does depend on what length you are looking at, for example, smaller trimarans have much more usable space that similar length cats - vis a comparo between a 21ft Farrier and 20ft open bridge deck
cat like a racing
Nacra or similar, (never mind the one recently sailed round the world
by that crazy Frenchman Yvan Bourgnon).
I'd much rather have sailed a Farrier 680 than that open-deck cat of Yvan's on his journey. Man's a masochist. Oh, right, French... Sorry...
Once cats get over 30ft they have seriously usable space in the hulls and the trimaran begins to go backwards in the comparo, unless of course you're sailing a Neel. Having first won Lotto so you can afford one that is!
I tend to think of tris as more stable sailing platforms than monos or cats, and the compromise of the less total space made up for by the usability of the whole boat.
I think which anyone chooses is more down to what they want to do with it, and which is their personal preference based on individual needs/desires.
Despite the extra acreage to paint
and anti-foul, I plumped for a tri over a cat largely because the tri's I liked can fold their wings and sit in normal width berths or on a trailer, providing far more options than a bridge-deck cat.
was the only criterion I'd have gone with a mono, as they can be had much cheaper than any cat or tri - generally speaking - hence why I'm finding this thread fascinating.