The US Navy is pressing ahead with the development of its littoral amphibious transport ship that will be optimised for the rapid deployment and transportation of personnel, equipment and supplies supporting military logistics, sustainment as well as humanitarian relief operations in the developing world.

The current contract is for one prototype with options for nine additional vessels that are expected to be exercised between FY2009 and FY2013.

The shipyard says the design has just successfully completed an initial critical design review.

The aluminium vessel will have the capability to transport medium-size units with their vehicles or reconfigure to provide troop transport for an infantry battalion, allowing units to transit operational distances while maintaining unit integrity.

The 35-knot top speed vessel also has a flight deck for helicopter operations and an off-load ramp allowing vehicles to quickly drive on or off. The ramp will enable use of austere piers and quay walls, common in developing countries, while the vessel's shallow draft (under 15 feet) will further enhance theater port access.

US Navy Strategic and Theater Sealift Program Management Office Programme Manager, Capt. George Sutton, commented, "The Austal JHSV program team performed well during the review process. I look forward to working with them towards the successful completion of the next critical milestone of this program."

Austal USA President and Chief Operating Officer, Joe Rella says the design has now entered the "Transitional Design Phase" with production of the lead JHSV to commence later this year.