Knowing very well that I'm not as knowledgeable as the Dog on Tri's, I'll just say that the ama's (the floats) are typically not built to support a rudder, also it would defeat the purpose of the tri to heel so much as to have the rudder out of the water (for longer periods). Cats are a different breed, obviously.
Originally Posted by CaptKermie
A question Dog;
If monohulls have one rudder and sometimes two (like mine) and Catamarrans have two rudders, how many rudders does a Trimarran have? In the picture you posted I see the windward amas has what looks like a rudder but could be a fixed fin. Also see the windward daggerboard is retracted but not the rudder or fin. Would a tiller on a Trimarran operate all three rudders at once? Just curious because I am not familiar with trimarran designs.