3 ms·

If they are indeed banging they should use morse code to communicate something

• deleted 3y ago
  [deleted]
• hellweaver666 3y ago
  ...---... ?
• ak_111 3y ago
  Interesting idea, I actually can't think of anything they are able to communicate that would aid in their rescue. They could probably signal if they are close to the surface, they won't be able to provide much more information on their exact location I think.
  • ip26 3y ago
    Identifying themselves to disambiguate from other random noises?
    • ak_111 3y ago
      The banging noise is already treated as non-random but that doesn't make it easy to locate, and they are presumably unable to locate themselves so won't be able to transmit any location details even if you gave them a few words worth of bandwidth, the best they might convey is how deep they are currently are "We are only a few meters above the wreck". for example