A Titanic diver has broke down in tears on live TV over the thought of the missing crew being 'buried alive in tin can'.

The submersible named Titan has not been heard from since Sunday (18 June), with search operations desperately trying to find the sub and the five men onboard.

Earlier today (22 June), US Coast Guard Captain Jamie Frederick predicted that the Titanic submersible has likely ran out out of oxygen, providing grim reading for the crew's families.

Despite that, Rear Admiral John Mauger of the US Coast Guard has said search efforts won't be stopping anytime soon, adding favourable weather conditions should help the rescue teams.

OcenGate

He told Sky News the search operation is still 'an active search and rescue', before adding: "We continue to keep the crew members and the families in our thoughts as we proceed with this search and rescue while we’re cognisant of the time and we’ve factored in a lot of data and information into the search.

"This is still an active search and rescue at this point and we’re using the equipment that we have on the bottom right now, the remote operated vehicles to expand our search capability, and then also to provide rescue capability as well.”

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The disappearance of the sub is of course devastating to all of us, with the large majority of us having no idea what the five crew members are going through.

However, Dr Michael Guillen is one man who can recall a similar situation, as he became the first TV correspondent to visit the remains of the Titanic back in 2000.

The voyage did not go all plain sailing on the Russia sub, with Guillen describing his terrible ordeal to Holly Willoughby and Dermot O'Leary on This Morning.

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He said he became stuck underwater for an astonishing 30 minutes, a moment that felt like a lifetime.

"Every minute that you're buried alive in this tin can, it stretches out for eternity. You lose any sense of time," Guillen explained.

Emotionally, he added: "I feel like I'm down there with them. I know what they went through.

"I feel it, I'm very empathetic, and I was hoping that they would experience that second chance of life that I did and I almost feel guilty talking to you this morning about how I was given that second chance.

"It's pretty remote that they're gonna be given a second chance and it's a terrible way to go.

"My only hope and prayer is that they experience that sense of peace that I did when I was ready to let go of my life."