If you combined a stealth jet fighter and an attack helicopter and stuck them in the water, what would you get? Well, according to the folks at New Hampshire’s Juliet Marine Systems (JMS), you’d get their GHOST marine platform. Privately developed for possible use by the U.S. Navy, the boat would reportedly be invisible to enemy ships’ radar, while also being faster and more economical than existing military vessels. The company’s big claim, however, is that GHOST is the world’s first super-cavitating watercraft.