Thank you again Frederick. While I do not know all of the in's n out's of the different locations or possible locations in relation to the Housatonic, the reports of the crew being found in their stations indicated to me hypoxia had to be high on the 'possible cause of death' list. If they were awake, aware and alert, some indication of displacement or panic should have been evident. They may have been 'stunned' from the impact of the shock wave but I'd think in the testing for torpedo placement that would have been looked at and factored in while being built. Could that piece of copper have been some part of a mooring clasp because I'd think copper would be lighter than iron?
How long could they stay submerged before they had to surface for air? I think just that one fact, that they were in place, is one of the more fascinating parts of this story. Even if they had known they were sinking and resigned to their fate and in those close quarters, instinct should have caused at least a few of them to try to get to the hatch. From what I've read, it's as if they were sealed in a plastic bag and they just went to sleep.
Did they ever find the lantern or whatever that would have shown the "blue light"?