Rivet,
Your post jogged my memory and I had this sense of several tragedies close together just before I joined (May '52). Truculent obviously sticks in the mind, and I have established the dates of the loss of Affray (16.4.51) , and those poor kids in the Gillingham bus tragedy (4.12.51), but another one, in my mind involving a submarine and a dock caisson, I cannot drag from my memory. I'm almost certain it was a Chatham incident, but at my age and condition of mind, cannot be sure.
Can you help me?
Regards,
Peter.