All Leander class frigates had the Limbo ASW mortar in a well-deck behind the landing pad http://t2.gstatic.com/images?q=tbn:ANd9GcS811sHk2_S7R2Iz-LhywvkQuTBfssVborH2h-y83u7OhuzXlKXKcfy6uK- and they used the Westland Wasp. When modernised, some ships had Ikara installed and the Limbo remained http:...
In May 2001 Scientific American did an article on supercavitating underwater weapons. This was in the wake of the Kursk disaster. The likeliest culprit for the explosion aboard the Kursk, was the propellant explosion in a Shkval rocket torpedo. A likely extrapolation to a future use of supercavitati...