A New Hampshire company says it has developed a stealth boat that can reduce water friction by a factor of 900 by producing a layer of gas around its underwater hull.
Juliet Marine Systems recently released photos of its Ghost boat, claiming it can travel up to 60 mph. The craft could be used to protect Navy and other ships from pirate attacks and other enemies.
The Ghost produces an effect in the water called supercavitation. Seen in some torpedoes, it can occur when an object moves fast enough through water to lower the pressure and create a gas bubble, reducing drag.
Juliet says the Ghost is the first supercavitating craft of its kind, and a 150-foot version is under construction in collaboration with a defense contractor. … Read more