I am no expert but I believe the tri is regarded as best platform for optimum sailing. Better balance, less pitching,
My understanding is that tendency toward pitching is *largely* a simple matter of hull length and weight, and the "pitchy" people experience on a cat is because the thing has no keel full of ballast. Am I wrong? This thing also looks like it likely has no keel full of ballast either, so why would it be less pitchy than a cat of about the same size?
more comfortable and basically combines the speed of a (fast) cat with the manoeuvrability of a mono.
Can you expand on this one as well? Why would cats be less manoeuverable? Is it just because of that (what looks like) 8-foot keel as opposed to the usually shallow draft that many cats have?
Usually though they don't lend themselves to decent accommodation plans and are more beamy than a cat. Not sure what a 40 foot beam would add as a multiplier in a marina. Big ouch factor.
Based on the sketches, it certainly looks like the beam from the outside of one outrigger to the outside of the other is something on the order of 25-30 feet. That'll put you onto the end of any dock and only ones with a LOT of room out beyond at that.
With respect to safety I believe them to be less vulnerable to capsize than fast cats because they do provide a bit more warning and feel for the loads on the sail when approaching the limits and of course they have a bigger beam. I might be talking crap. I don't know, but this is what I have read.
I think on a tri you would run a greater risk of pitch poling before you flipped sideways. I have seen a few on youtube do this and there is an example of a dragonfly running a rate of knots when one of its pontoons buried itself and did not have the mass to push through the wave and it tripped and flipped. To be honest though it looked way out of control before this happened. Think it was racing.
Fast cats scare me somewhat. I would not trust them. Even Chris white has developed a mast foil to counter the problem of rapid main sail loading in a squall which has been the cause for some of his boats to flip.
Yeah, well, that same giant canvas is part of the reason you might see the 30 knots.
That and the giant keel. If you sit down and do the math, the weight in the center might not be more stable than a catamaran with the weight outboard in two hulls. Any capsizing has to start with lifting a hull out, and that *should be* all but impossible. The discussion from cat owners is that any sensibly-canvased cat with reasonable keel management (windward swing keel only down, for example) will just slide sideways under any conditions that don't blow out the sail, and blowing out the sail solves the problem. (Tom Lack supposedly offered a not-insubstantial bounty for anyone that could get a Catalac to lift a hull. I don't think anyone ever claimed they had.)