Philip Dulhunty

[1] After returning from service with the armed forces in Japan, Dulhunty, in partnership with his younger brother Roger, inaugurated flying services to the northern New South Wales town of Port Macquarie in 1949, operating several Short S25 Sunderland MKIII flying boats leased from Trans Oceanic Airways under the banner of Port Macquarie Clipper, from Rose Bay in Sydney.

[1]: 210, 315  Having experimented with his own swimming action, he worked together with Calvin A Gongwer to devise the "Aqueon", a winged contraption configured to cause the swimmer's legs to operate in unison, delivering power in the manner of a dolphin's kick.

The device automatically adopts the correct angle on the bottom, obviating the necessity for sailors to make the often difficult estimation of depth and length of line to pay out.

[1]: 326–8 [citation needed] Dulhunty established Dulmison Pty Ltd in 1947 to exploit importing opportunities in the strictly controlled, quota and foreign exchange limited trading environment then prevailing in post-War Australia.

After opportunistically trading in whatever available quota presented itself (e.g. fireworks, costume jewellery, calico and case shooks[1]: 96–9 ), Dulmison settled into the power distribution components business in which it became a leading player in Australia for decades.

[11] Al Westbury was transferred to lead the development programme, Dave Irwin to come up with the initial idea and design and the world's first true, battery-powered laptop computer, the Dulmont Magnum, which went into production in 1983, was the result.

[11][1]: 285–6 Having himself witnessed the heavy cruiser USS Chicago firing on the Japanese minisub M-24 in Sydney Harbour on 1 June 1942, Dulhunty developed a lifelong fascination with the event which culminated in publication of his forensic analysis in 2009 concluding that the sinking of HMAS Kuttabul during that encounter was not, as the official account would have it, to a torpedo fired by the Japanese submarine but, rather, a five-inch shell from one of the guns of the Chicago.

[1]: 414–429  Dulhunty was the pilot of the seaplane which re-enacted the 30 May 1992 Japanese reconnaissance flight which preceded the attack on its 50th anniversary[12][1]: 340  and he was instrumental in the original Yokosuka E14Y1 "Glen" floatplane's rediscovery in 1994.