Underwater noise has been discovered in the search area for a missing Titanic submarine, according to the Coast Guard

Underwater noise was detected in the search area Sub who has disappeared when carrying five people to Wreck of the Titanicsays the US Coast Guard.

In a tweet just after midnight EDTThe Coast Guard said the noise was picked up by Canadian P-3 aircraft and underwater operations were subsequently deployed to try to pinpoint the source of the noise.

Those operations have yet to yield results, but underwater operations are continuing, the Coast Guard said, adding, “Data from the P-3 aircraft has been shared with our U.S. Navy experts for further analysis, which will be considered in future.” search plans.”

The submersible had As of Tuesday night, less than 40 hours of breathable air remained, the Coast Guard said. At most, about 96 hours of oxygen was on board at the start of the dive, officials said.

A Canadian research vessel contact lost by ship during a Sunday morning dive about 900 miles east of Cape Cod, Massachusetts, and US and Canadian authorities have been looking for it.

Coast Guard Captain Jamie Frederick told reporters during a news briefing Tuesday afternoon that there was “approximately 40 hours of breathable air remaining,” an estimate based on the ship’s original 96 hours of available oxygen.

Chief Petty Officer Robert Simpson, a Coast Guard spokesman, said there will not be a “hard” transition from a search-and-rescue mission to a salvage operation after those hours are up because several factors could prolong the search.

Frederick said authorities were working around the clock to search the Atlantic for the missing submarine, describing the effort as “an incredibly complex operation”.

“We will do everything in our power to bring about a rescue,” Frederick said. “…There is a full press effort in court to get the equipment on site as soon as possible.”

Pakistani businessman Shahzada Dawood, his son Suleman, British explorer Hamish Harding and French explorer Paul-Henri Nargeolet were on the submarinealong with Stockton Rush, the CEO of OceanGate Expeditions, the US-based company that planned the trip.

If the submarine is found in time, it’s hard to describe what a deep-sea rescue would mean, Frederick said.

“That’s a question that the experts will have to address then, what’s the best course of action to salvage the submarine, but I think it will depend on the particular situation,” he said.

The Coast Guard said the submarine’s last recorded communication was about an hour and 45 minutes after Sunday’s dive.

Since the submarine disappeared, the U.S. and Canadian Coast Guards, as well as the U.S. Navy and Air National Guard, have combed an area totaling about 7,600 square miles, larger than the state of Connecticut, Frederick said.

A pipe-laying vessel arrived in the search area on Tuesday and sent a remote-controlled vehicle into the water to search for the submarine at its last known location, he said.

The US Navy is working to deploy military assets to assist in the search, Frederick said.