Titanic sub passengers face ‘gradual’ suffocation and hellish health effects

The five men trapped inside of a submarine which headed down to view the wreckage of the Titanic could be suffering a range of hellish health problems, an ex-US Navy veteran has revealed.

As investigators pick up on a "banging" noise near to the site and speculation over "signs of life" near the Titanic's wreckage, the people trapped in the OceanGate vessel could be hit with a slate of health woes with time running out.

It comes as Dr Dale Molé warned of the health effects of being trapped inside a submarine with the US Navy veteran publishing his own experience of being trapped in a submarine horror.

READ MORE: Titanic submarine search live as 'underwater noises' give searchers fresh hope

From excess toxic gas to hypothermia due to low temperatures, the submarine passengers are, according to Dr Molé, battling against a "hostile internal submarine environment".

Speaking to Daily Mail, Dr Molé said: "Anytime humans are confined in an airtight space, most people may think of oxygen, but carbon dioxide is actually a bigger concern.

"In a submersible, they'll have some system of scrubbing carbon dioxide. If they lost battery power, then that system would no longer work."

Passengers who took the Titan submarine to the depths of the ocean were sealed inside with 17 bolts which can only be opened from the outside.

The expert added those inside face risks of "physiological challenges, including toxic gases, exposure to elevated ambient pressures, and hypothermia."

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Dr Molé says passengers will slowly start to convert breathable oxygen into carbon dioxide, which will leave them finding it "difficult to breathe".

He added: "The people inside will find it difficult to breathe, their depth of respiration will increase. They'll develop headaches and gradually become unconscious.

"The rising level of carbon dioxide is what kills people first when they're in an airtight environment, not the level of oxygen."

Breathing woes for those on board will be like "putting a bag over your head", while hypothermia also provides a risk of trying to "generate heat" which, in turn, "uses up more oxygen".

He cited also potential panic attacks and hyperventilation brought on by said panic would use up more oxygen.

The news comes as "signs of life" have apparently been detected in the area where Titan went missing.

Richard Garriot de Cayeux, President of The Explorers Club, said in a statement today (Wednesday, June 21) "there is cause for hope" as "we understand that likely signs of life have been detected at the site".

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