DIVE LOG AUSTRALASIA FEB 2026

this device had a clearer and easier to read display. The diver read decompression data from a moving yellow line on a grey background against red stripes indicating stops from 15 to 3 meters. The operation was very simple and once at the surface, the DCK also indicated the residual nitrogen levels in the diver’s body for the subsequent decompression procedure. DCS and DCS/Dt2 Gauges: Released between 1977 1979, the DCS was a modern analog decompression gauge with a stainless-steel case and capillary depth gauge to 60M. Ambient pressure was transmitted through a liquid transducer. The DCS was supplied with a pressure resistant case to transport it during flights to maintain its correct calibration. The Dt2 model was connected by a high-pressure hose, coupled to the regulator HP port. The gauge thus indicated the diver’s minimum air required for the necessary deco stops, via an integrated analog pressure gauge. In 1980 the SOS DCR-Manometer was the last of the SOS decompression gauges, which displayed values based on the US Navy tables and was designed for repetitive and unusual exposures with deco stops extended to 18 & 21M. However, the most popular SOS deco gauges were the DCP in both plastic and stainless-steel cases. If you would like more information about diving pioneers, contact the Historical Diving Society Australia-Pacific by email at: info@historicaldivingsociety.com.au or visit our website www.historicaldivingsociety.com.au https://m.facebook.com/groups/120950924589540/

References: Andre Campedelli HDS Italy & Lothar Seveke HDS Germany

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DIVE LOG Australasia #416 February 26

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