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Dave Not Coming Back (French: La dernière plongée de Dave) is a Canadian documentary film, directed by Jonah Malak and released in 2020. [1] The film centres on diver Dave Shaw's death while attempting to recover the body of Deon Dreyer from the submerged Boesmansgat cave in 2005, through a mix of camcorder footage from the incident and the personal reflections of his surviving friend Don ...
In 1995 South Australian cave diver Christopher Brown went another 20 m (66 ft) further again, and in late 2008 much of the cave's more distant regions were explored, mapped (using radio-location "pingers" designed and operated by Ken Smith) and videotaped by Craig Challen and Richard Harris et al using rebreather technology.
In Britain rebreather use for civilians was negligible, and the BSAC formally prohibited rebreather use by its members. The Italian firms Pirelli and Cressi-Sub at first each sold a model of sport diving rebreather, but after a while discontinued those models. Some home made rebreathers were used by cave divers to penetrate cave sumps.
At the end of the last millennium closed circuit rebreathers were used to explore these caves. [citation needed] By the end of the 1990s, The Pit in the Dos Ojos cave system located 5.8 km from the Caribbean coast had been discovered, and by 2008 it had been dived to 119 m deep. At that time, technical diving and rebreather equipment and ...
On December 15, 2007, Woodville Karst Plain Project divers physically connected the Wakulla Springs and Leon Sinks cave systems establishing the Wakulla-Leon Sinks cave system. [2] This connection established the system as the longest underwater cave in the United States [ 1 ] and the sixth largest in the world with a total of 31.99 miles (51. ...
A Diving rebreather is an underwater breathing apparatus that absorbs the carbon dioxide of a diver's exhaled breath to permit the rebreathing (recycling) of the substantially unused oxygen content, and unused inert content when present, of each breath. Oxygen is added to replenish the amount metabolised by the diver.
Statistics collected and analysed by DAN suggest that rebreather diving fatalities have averaged around 20-25 per year over the period from 2013 to 2023, which is slightly higher than the previous period, but there are also more rebreather divers doing more rebreather dives. 1400 to 2300 certifications per year are estimated, and the rebreather ...
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 1,550 metres (5,090 ft) and the dive duration ...