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Diving since 1961 – with a background in military, commercial, recreational and technical diving – David Strike has dived extensively throughout the Asia Pacific region, has authored several hundred articles about diving, is the recipient of the ADEX ‘Lifetime Achievement Award’ for contributions to Technical Diving, a Fellow of the Explorers Club of New York, and the former owner and organiser of the biennial OZTeK Technical Diving Conference and a regular speaker and presenter at regional and international diving events. He is presently engaged in producing a series of diving-related books.

  • The ‘Polly-Gaff’ Gas Analyser

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    Technology has enjoyed considerable advances since the Polly-Gaff’ Gas Analyser was first announced – almost thirty years ago, in the May 1997 pages of Scuba Diver Magazine —————– The inherent problem with gas analysers is their frailty.  While primary diving… Read More ›

  • Old Bottles

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    For more than two hundred years, Sydney Harbour has been a focal point of Australian life.  For immigrants fleeing countries either torn apart by war, or facing economic collapse, arrival in Sydney Harbour marked the beginning of a new life. … Read More ›

  • ‘Margaret’ and Me

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    In the early ‘seventies the heavy demand for divers to work on the North Sea gas and oil platforms exceeded supply.  Wages were high.  So was the diver mortality rate. Confronted by a harsh environment and difficulties not previously encountered… Read More ›

  • “Water, Water, Everywhere. ….”

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    A reminder to never again take a valuable resource, like water, for granted with a tale of a long-ago visit (nominally, as the, “Associate Manager – Asia” for the Australian Financial Review) to a country that, then – the late… Read More ›

  • Vale John Whitehead

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    Death seems intent on proving itself to me to be life’s last ‘Great Adventure’. On the weekend of October 4th & 5th 2025, yet another of my closest – and longest lasting – friends died.  John Whitehead was a man… Read More ›

  • Dive ‘Talk’ 3 – Visual

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    A continuation of the two earlier pieces on underwater communications, “Dive ‘Talk’ 1 – Manual”, and, “Dive ‘Talk’ 2 – Accoustically Speaking.” Flags: Flown from a vessel tendering to divers, or from a tethered surface safety float – especially when… Read More ›