WRT to the Akronelli Canberra, I was on TASF at the time, but off shift. Shortly after the crash alarm went a tannoy went out for any qualified divers to report to 10 Port immediately. I had my gear in the back of the car, fully charged, so pootled off down the beach road. When I got there, the only one to respond I hasten to add, they wanted me to do a rope dive onto what was left. 'What depth?" I asked, 'About 300 feet' came the reply. After picking myself up of the floor and giving them a quick lesson in physics, we stood on the dock and there was this heavy graunching sound as one Her Majesty's finest launchs wrapped it's prop around a 1" hawser in their haste to get out to the scene. Cut to the chase, I got my rope dive, hacksawing through said hawser underneath the launch at a depth of about 6 feet........they did buy me a case of Keo though for getting them out of the sh1t