14 April 1945, U-1206 was stricken from a toilet malfunction flooding the fore compartment. (she was later bombed from the air)
9 Febuary 1945, HMS Ventura Sinks U-864 in the first ever submarine combat with two submarged vessles .
1 June 1939 HMS Thetis disaster, The vessel sunk while attempting her first dive in the bay of Birkenhead during her sea trials, 99 lives were lost, cause was put down to malfunctioning torpedo tube.
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