Titanic submarine with five on board missing in bad weather off coast of Canada

Titanic Submarine- Underwater Noises Detected By Rescuers In

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Rescuers detect 'underwater noises' in hunt for lost Titanic sub

Titanic mystery: What we know about the submarine search

Titanic tourist submarine disappears in Atlantic Ocean

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Missing Titanic sub updates: Aircraft detects underwater noises

Crews searching for Titanic submersible detect sounds, US Coast

Titanic Submersible Search Highlights: Canadian safety regulators