If the banging hasn't been heard since could the sounds be related to the vessel imploding? Oxygen tanks or similar rupturing? You'd think if the passengers wer

If the banging hasn't been heard since could the sounds be related to the vessel imploding? Oxygen tanks or similar rupturing? You'd think if the passengers were still alive they'd continue to make noise at regular intervals or at least try to bang out an S-O-S in Morse code.