Appologies if this is posted here elseware; I did not find it with a search. Reposted from the Facebook Issues Forum: "Steven Mantz posted in Issues boards. Steven Mantz 4:32pm Aug 31 First Super-Cavitating Ship in The United States Navy. Juliet Marine Systems, Inc. (JMS) announced today that the US Navy/USPTO have removed Secrecy Orders previously applied to GHOST. For the first time, Juliet Marine is able to release photographs of GHOST, the first super-cavitating craft, to the public. Development of the first-ever, super-cavitating craft, in many ways, is as difficult as breaking the sound barrier. GHOST is a combination aircraft/boat that has been designed to fly through an artificial underwater gaseous environment that creates 900 times less hull friction than water. GHOST technology adapts to manned or unmanned, surface or submerged applications. Any Navy possessing GHOST technology could operate in international waters undetected and would have an overwhelming advantage against conventional ships. http://www.facebook.com/l/dAQDqWxOS...m-Unveils-First-Super-Cavitating-Ship?page=-1 Firm Unveils First Super-Cavitating Ship in The United States Navy Forum warships1discussionboards.yuku.com Firm Unveils First Super-Cavitating Ship" Although, as some of the commenters there note, maybe it's a ship too far , if it can be scaled to your typical motoryacht as the link indicates, the fuel reduction may be very attractive to designers.