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1OO jobs Applications in Marine appointed overall Bidston Boat Handling British Sub-Aqua Club buoyancy Chief Diver Code of Practice Commercial Diving D.G. Roberts depth different sea conditions Diver Guidance divers available Divers were involved Diving Applications diving group Diving Manual Diving Officer electric tug Environment Research Council float four divers Godalming GU8 5UB Guidance by Sonar Helicopter I.O.S. divers I.O.S. DIVING TEAM I.O.S. Wormley Instalation of Sonar INSTITUTE OF OCEANOGRAPHIC involving 95O man-hours INVOLVING DIVERS Ivor Chivers KELLAND knot current launch and recovery lost equipment Marine Science Mooring N.C. FLEMMING Natural Environment Research NIO Seminar Series occasion whilst OCEANOGRAPHIC SCIENCES organisation Photography Plymouth Principles of Safe propellor published by N.E.R.C. recompression chamber recovery of GLORIA Rigging Hauling Rockall Island Safe Diving Practice Scientific Diving Society for Underwater Southampton special equipment Stewart Willis survey Taunton techniques towed Underwater Association Symposium Underwater Engineering Underwater Technology WORMLEY DIVING worse than sea