yes the QM was tight, I chap I knew was in the REME they had an extra Diamond T gearbox, so before inspection, that ended up in the Rhine, this during wartime.
there's a small vessels (launch)at the bottom of the South China Sea, (hit the reef)thats full of medical equipment.(officially)
actually it was stripped out, and when to the bottom empty, HMS C
, Gun control room(below Decks) was also stripped out( post war(just) nothing behind the switch boards, they seal anything.