The US Navy wants 55 of these littoral vessels and Austal has an order for two catamaran troop carriers. If the US Navy does buy/build all of littoral and troop carriers by 2014, Austral will have built 20% of the US Navy’s fleet.
Trimaran power consumption is 20% less when operating in a seaway compared to a catamaran in that area. And reduced by as much as 50% when compared with a monohull operating in waves. All those power reductions equate directly to fuel consumption reductions.
The Austral Trimarans have a speed of 39-40 knots.
the trimaran hullform which effectively decouples vessel length from capacity and permits the marriage of a cost effective, revenue-earning platform with a longer hull form that offers superior seakeeping in a range of conditions.