Turistubåt på väg mot Titanic försvunnen (2023-06-19) Vrakdelar funna, inga överlevande (2023-06-22)

David Pogue, a CBS reporter who travelled in the Titan submersible last year, told the BBC about the issues that both the submersible crew and the land crew were likely to be experiencing, saying that there was currently "no way" to communicate with the vessel as neither GPS nor radio "work under water".

"When the support ship is directly over the sub, they can send short text messages back and forth. Clearly those are no longer getting a response," Mr Pogue said.

He added that because the passengers were sealed inside the vessel by bolts applied from the outside, "There's no way to escape, even if you rise to the surface by yourself. You cannot get out of the sub without a crew on the outside letting you out."