BNPS.co.uk (01202 558833)<br /> Pic: SM Museum/BNPS<br /> <br /> HMS Triumph's launch in 1939.<br /> <br /> A former Royal Navy officer is on a one-man mission to find a Second World War submarine his uncle died on that has been lost at sea for 74 years.<br /> <br /> Gav Don started his crusade to locate HMS Triumph about five years ago and plans to take a boat with sonar equipment to the Aegean Sea next year to track down the wreck.<br /> <br /> The 55-year-old former warfare officer, who now runs his own business, hopes to preserve the vessel's final resting place and make sure its crew are honoured and remembered.<br /> <br /> During his quest he has found relatives of about half the crew, including a wartime sweetheart, and uncovered an intelligence disaster that had been completely ignored by British records.
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