Here at chatham dockyard. controller. chris reynolds spent a year on board 0celot. back then, he was a 25 year old torpedo officer. we re standing at the moment where all the torpedoes were stowed, all the weapons. i was responsible for the welfare of all the sailors that operated up here. if i was asked to go on a submarine again, i d leap at the opportunity. during her first three years of commission, 0celot sailed more than 90,000 miles. she carried advanced technology, which meant she could remain submerged for weeks at a time. powered by admiralty diesel engines that were built here at chatham, and they were used on the surface and also to charge the batteries. when 0celot submerged, they actually switched over to electric batteries, and then they could remain undetected, very quiet. after being decommissioned