THIS IS NOT A CAPTION
My thanks to all of you who so quickly answered my appeal for an ident. The tragedy of the sinking is eerily reminiscent of the "Thetis" loss in Liverpool Bay in 1939.
That loss (Wiki has a full report) was excusable to some extent, in that a check of the torpedo tube inner door
was made (by opening a check valve to a narrow bore tube through it). But the narrow bore tube was blocked with paint and no water squirted through..... Satisfied, the rating opened the inner door. The outer tube door was open, too.......
But it hard to see how the M2 was taken down with hangar doors open (shades of the "Herald of Free Enterprise" in Zeebrugge in 1986).
Danny.