The vessels used by Hawaii Superferry are designed and built by Austal USA, a division of Australia-based shipbuilder Austal. The company plans to utilize two 349-foot (106 m) double-hulled ships powered by MTU Friedrichshafen engines using waterjet propulsion (which the company claims will minimize impact to marine mammals) and capable of transporting up to 866 passengers and 282 subcompact cars. The ships feature floor-to-ceiling windows offering panoramic views, sofas and family seating, and flat-screen TVs and video games.
The first ship, the Alakai, docked in Honolulu Harbor on June 30, 2007. The second ship is scheduled for completion in 2009.