US coast guard: crew on missing Titanic submersible have '40 hours of breathable air' remaining

In a press briefing this afternoon, Captain Jamie Frederick of the US coast guard gave details of the "complex" search and rescue operation now underway to locate the missing submarine. 

One of the last known photographs of the submersible Titan, taken on Sunday, June 18. Picture: Action Aviation via AP

The five people inside a submersible that
went missing during a dive to the wreck of the Titanic have roughly 40 hours of breathable air left, the US Coast Guard said.

In a press briefing this afternoon, Captain Jamie Frederick gave details of the "complex" search and rescue operation now underway to locate the missing submarine.