Searchers detect undersea sounds in hunt for missing Titanic sub

Search teams detected underwater sounds while scanning the North Atlantic for a tourist submersible that vanished with five people aboard during a deep-sea voyage to the century-old wreck of the Titanic, the U.S. Coast Guard said early on Wednesday.
The detection of the sounds by Canadian aircraft was reported by the Coast Guard as the clock ticked down to the last 24 hours of the craft’s presumed oxygen supply.
Robotic undersea search operations were diverted to the area but there was still no tangible sign of the missing vessel, the Coast Guard said on Twitter.
The 21-foot-long pilot-driven submersible Titan, operated by U.S.-based OceanGate Expeditions, lost contact with its parent surface vessel on Sunday morning about one hour, 45 minutes into what should have been a two-hour dive to the site of the world’s most famous shipwreck.
The mini-sub was designed to remain underwater for 96 hours, according to its specifications, giving its occupants until Thursday morning before their air tanks would run out, assuming that the Titan was still intact.
The fate of the submersible and those aboard remained a mystery as search teams from the U.S., Canada and France mounted an intensifying search in an area of open sea larger than the state of Connecticut.