https://www.vox.com/technology/2023/6/21/23768771/titanic-submarine-missing-oceangate-titan-submersible-search-efforts-updates

The Coast Guard is still looking for the sub, despite the detection of “banging noises” near where it went missing.

Time is running out for the search and rescue effort to recover a submersible vessel that was lost during an expedition down to the shipwreck of the Titanic. But, in the words of US Coast Guard Capt. Jamie Frederick, who is helping to lead the effort, “You always have hope.”