Dive Equipment
Shaw's first rebreather was an Inspiration closed circuit rebreather, which he eventually dived to depths greater than those of which the unit was supposedly capable. That prompted him to purchase a Mk15.5. He modified this unit by removing the analogue electronics and replacing them with the Juergensen Marine Hammerhead digital electronics in a specially modified POD designed to handle extreme pressures. The Mk15.5 was his rebreather of choice for dives deeper than 150 metres (500 ft). Shaw also owned a Cis-Lunar Mk5P that he used on extended dives in caves that are shallower than 150 m. He believed that the Cis-Lunar had greater redundancy capabilities for such dives, but could not cope with extreme depths.
Read more about this topic: David Shaw (diver)
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