Hamish Harding is among the five on board the missing Titanic submersible.
The US Coast Guard predicted that the oxygen supply for the Titan crew would run out at 12:08pm BST
The OceanGate sub had been completing an exploratory dive of the Titanic before it vanished on Sunday
A video posted to TikTok shows the sub about to make its dive
Time is running out to find the passengers on board the missing Titanic submarine
The US Coast Guard has predicted that the crew's oxygen supply has now run out
There are many dangers that they could be facing
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Wendy Rush's great-great-grandparents were Isidor and Ida Straus, who perished on the ill-fated ship in 1912.
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Recovery and rescue vessels are now racing to the site where 'banging' noises were heard.
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A previous passenger has revealed how his journey was cut short after multiple system failures on board the Titan submersible.
The submersible - Titan - lost communication with tour operators on Sunday.
The missing OceanGate submersible headed for the Titanic is somewhere in the Atlantic Ocean
Previous OceanGate expeditions have captured incredible footage of the Titanic wreckage
OceanGate’s tourist submersible went missing while travelling to the wreckage of the Titanic
An expert has explained what the 'worst case scenario' might be for the missing submersible
Jannicke Mikkelsen has opened up about her concerns as the search continues for the missing sub
The vessel disappeared while travelling to the wreckage of the Titanic
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Search efforts for the missing submarine have heard 'banging noises' as the need to rescue them soon intensifies
He's said the community 'expected this to happen' at some point
Five passengers are on board the missing submersible that disappeared during its expedition to the wreck of the Titanic
A British explorer and billionaire businessman are among the five confirmed names missing on Titanic sub that went missing on Sunday
Photos show the conditions of the five passengers stuck inside the missing sub
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He said on social media that a work emergency prevented him from going