Dave Shaw

Shaw's first rebreather was an AP Inspiration closed circuit rebreather, with which he eventually dived to depths beyond its purported capability. This prompted him to not only purchase a Mk15.5 but to replace its analogue electronics with the digital ones of the Juergensen Marine Hammerhead, resulting in a specially modified POD designed to handle extreme pressures. The Mk15.5 was his rebreather of choice for dives deeper than . For extended dives in caves shallower than 150 m, Shaw used his Cis-Lunar since he believed it had superior redundancy capabilities, but could not cope with extreme depths. == Diving records ==

On 28 October 2004, Shaw descended to a depth of 270m at Bushman's Hole, South Africa, breaking the following records: • Depth on a rebreather • Depth in a cave on a rebreather • Depth at altitude on a rebreather • Depth running a line He used a Mk15.5 with Juergensen Marine Hammerhead electronics and the following gas mixtures: trimix 4/80, 10/70, 15/55, 17/40, 26/25, air, nitrox50, 100% oxygen. The cave elevation was and the dive duration was 9 hours and 40 minutes. On this dive, Shaw discovered the body of Deon Dreyer, a South African diver who had died in Bushman's Hole ten years previously. The body was at a depth of . == Last dive ==

Shaw died on 8 January 2005 while attempting to recover the body of Deon Dreyer. Shaw ran into difficulties when the body unexpectedly began to float. Shaw had been advised by various experts that the body would remain negatively buoyant because the visible parts were reduced to the skeleton. However, within his drysuit, Dreyer's corpse had turned into a soap-like substance called adipocere, which floats. Shaw had been working with both hands, and so had been resting his can light on the cave floor. The powerful underwater lights that cave divers use are connected by wires to heavy battery canisters, normally worn on the cave diver's waist, or sometimes attached to their tanks. Normally he would have wrapped the wire behind his neck, but he was unable to do so; the lines from the body bag appear to have become entangled with the light head, and the physical effort of trying to free himself led to his death. Three days later, both of the bodies that had become entangled in the lines were pulled up to near the surface as the dive team was retrieving their equipment. Shaw's close friend and support diver, Don Shirley, nearly died as well and was left with permanent damage that has impaired his balance. His death has been profiled in a number of documentary films, including the 2020 documentary feature Dave Not Coming Back. Australian band We Lost the Sea's 2015 concept album Departure Songs features a song titled The Last Dive of David Shaw which uses audio recorded during the dive. == Personal life ==

Shaw was a Christian. He and his wife, Ann, lived in Hong Kong, where they were members of a small Christian congregation. They had two children, Steven Shaw and Lisa (née Shaw) Moyers. == References ==