Last ping from Titanic: Tourist submarine with five aboard including British billionaire was just above wreck when comms suddenly died at 12,500ft down - amid fears it is stuck too deep for manned rescue sub and with air to last until 12pm Thursday
- Read DailyMail.com's live blog on the missing OceanGate Expeditions sub
- Submersible lost contact at 4am on Sunday and has up to 96 hours of oxygen
- Those aboard Titanic tourist sub include British billionaire Hamish Harding
PUBLISHED: 20:36 EDT, 19 June 2023 | UPDATED: 21:39 EDT, 19 June 2023

Titanic tourist sub was just above wreck when communications went dead
As the terrifying race against time began yesterday, rescuers admitted the submersible could have become stuck in the wreckage of the Titanic.
The missing tourist submersible with five people aboard including British billionaire Hamish Harding is understood to have last 'pinged' while it was directly above it's destination - the Titanic.
The sub, owned and operated by OceanGate Expeditions, was taking a crew of five people - including company CEO Stockton Rush, French explorer PH Nargeolet and Harding - 12,500ft underwater as part of its £195,000-a-head tour of the 1912 shipwreck.
The crew, who launched at around 4am on Sunday but lost communication with the sub's mothership MV Polar Prince an hour and 45 minutes into the two hour descent, has enough oxygen to last underwater until 12pm on Thursday UK time (7am EST).