Relatives have now supplied 39 poignant pictures of members of the lost crew.
Top row left to right - Able Seaman Geoffrey Brown, Engine Room Artificer William Dempster, Lt Geoffrey Wright, Midshipman George Waterall, Stoker John Turner, Torpedo Gunners Mate Frank Collison, Leading Seaman Donald Hutchinson.
Second row - Corporal Clive Severn, Engine Room Artificer Thomas Phillips, ?, Bombadier Alfred Robert Child, ?, Able Seaman William Hall, leading cook Cornelius O'Brien, ?.
Middle row - Lt Edward Arthur Collins, Leading Stoker Claude Baxter, Leading Telegraphist Reginald Waye, group shot, Petty Officer Colin Duffay, Lt Robert Douglas, Leading Seaman George Newby.
4th row - Telegraphist William White, Engine Room Artificer Fred Wilkinson, Petty Officer Robert Theobald, ?, Able Seaman Leonard Esau, ?, ?.
Bottom row - Engine Room Artificer John Glen, Stoker Herbert Gates, Able Seaman Richard Howard, Able Seaman John Underwood, ?, ?, Lt Michael Janvrin and Stoker Arthur Robinson.
The relatives of the crew of a lost British submarine have gathered together to mark the 77th anniversary of their deaths and are determined to finally track down their watery tomb...
Poignantly, the families met up on HMS Alliance, the only remaining WW2 era British submarine based at the Royal Navy's submarine museum in Gosport.
Royal Navy submarine HMS Triumph is thought to have been sunk by a German mine whilst on a top secret mission in the Aegean on the 9th of January 1942, but their final resting place has never been found.
They were traced and brought together by Gav Don, who is on a one-man mission to find the wreck of the submarine that is somewhere in the
The former Royal Navy officer's uncle Robert Douglas-Don died with the rest of the 62-strong crew in January 1942.
At the time the submarine was on a top secret mission to recover 18 escaped Allied soldiers from a remote Greek island.