Let me tell you the weakness of these vessels. First..they rely on very light weight to go fast. Hence they have no ability to absorb any damage. Even a RPG would pierce the hull or superstructure. Second..they require lots of hp to go fast..so they burn a huge amount of fuel. And if you can guess..fuel is weight and they can’t carry a lot..so they have liimited range and limited staying power.
If they rely on helo’s and small boats to extend their reach..you might as well have a heavier longer legged vessel to support the helos and boats.
All valid points. I’d like to add that in the current financial crisis, and with the Navy canceling their Littoral Combat Ship program, this Aussie tri-maran is a pipe-dream. Ain’t gonna happen.