Scientific American in their May 2001 issue had an article titled "Warp Drive Underwater" about supercavitation technology and the Russian Va-111 Shkval torpedo. This was about the time that the sinking of K-141 Kursk was believed to have been caused by an explosion of a Shkval. The article suggests that supercavitation was the next big thing in undersea warfare. There were predictions of all sorts of rocket-powered torpedoes and superfast minisubs. Is supercavittion still in the realm of science fiction or are defense contractors and navies seriously looking at supercavitation technology?