 The calculations show possible advantages in a defined band of relative speeds.A new type of super-fast vessel, the "wave-piercing" trimaran (WPT) is known as an air-born unloaded (up to 25% of displacement) vessel, that can achieve twice the speed with a relative power.Some trimaran configurations use the outlying hulls to enhance stability and allow for shallow draft, examples include the experimental ship RV Triton and the "Independence" class of littoral combat ships (US).