Canadian aircraft has detected underwater noises in search for a missing sub near Titanic.

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The US Coast Guard says a Canadian aircraft detected underwater noises while searching for a submersible that vanished while taking five people down to the wreck of the Titanic.

As a result of the noises detected by the Canadian P-3 aircraft, search efforts have been relocated. Those searches had not found anything, but are continuing.

Rescuers have been racing against the clock because the vessel could run out of oxygen even under the best circumstances by Thursday morning.

In addition to an international array of ships and planes, an underwater robot had started searching in the vicinity of the Titanic, and there was a push to get salvage equipment to the scene in case the sub was found.

They launched at 4 am yesterday but lost communication with the mothership one hour and 45 minutes later.

In an interview last year, Rush said the explorers would be safe and have the oxygen necessary to survive.

But he then added there was a ‘limit’ to safety.

He told CBS News: ‘You know, there’s a limit. At some point safety is pure waste. I mean if you want to be safe, don’t get out of bed.

‘Don’t get in your car. Don’t do anything. At some point, you’ll take some risk, and it really is a risk/reward question. I think I can do this just as safely by breaking the rules.’

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