expansion joint

The heavy weight of the engines was causing a bend in Titanic's double bottom. Does this mean the double bottom was weakened and did the breakup start there? this would go perfectly with the V breakup theory, because the double bottom would of held on and water would seep through, causing the...

I have just been re-reading Lynch's Titanic Illustrated History, and on page 108 he mentioned that Phillips and Bride were having a hard time hearing the marconi, both because of the steam venting and also because of a hissing noise which seemed to be coming from the forward expansion joint...