Titanic submarine search: Family of missing British billionaire ‘have great faith and trust in rescuers’

Rescuers are in a race against time to find Mr Harding and four other passengers on board the 6.7 metres (22ft) long OceanGate Expeditions vessel

Action Aviation, company chairman and billionaire adventurer Hamish Harding. File Picture: Action Aviation via AP

The family of missing British billionaire Hamish Harding have said they have “great faith and trust” in rescue teams, as the US Coast Guard expands its search for the submersible tourist vessel he is on into deeper waters.

There may be as little as 54 hours of emergency oxygen left aboard the submersible, named Titan, which lost communication with tour operators on Sunday while about 435 miles south of St John’s, Newfoundland, during a voyage to the Titanic shipwreck off the coast of Canada.