Rescuers are still trying to locate a submersible which went missing in the Atlantic while on a trip to the shipwreck of the Titanic.
The Titan submersible, operated by OceanGate Expeditions, was reported missing on Sunday evening in the mid-Atlantic about 435 miles south of St John’s, Newfoundland, Canada.
Read more: Live updates after Titanic tourist submersible goes missing
The five people on board the submersible may have as little as 55 hours’ worth of emergency oxygen left as of 2pm on Tuesday, officials said.
Here are they key events over the past three days:
Saturday 17 June
10.30pm
British billionaire Hamish Harding, 58, chairman of private plane firm Action Aviation, posts on Twitter and Instagram that he is joining the OceanGate Expedition dive on the Titan submersible to the shipwreck of the Titanic.
He wrote on Instagram: “A weather window has just opened up and we are going to attempt a dive tomorrow.”
OceanGate charges $250,000 (£195,000) for an eight-day trip that includes a dive to the wreck of the Titanic.
Sunday 18 June
4am (Eastern Standard Time)
The Titan submersible begins its dive to the wreck of the Titanic, launching from its support ship, the Polar Prince, about 435 miles south of St John’s, Newfoundland, Canada.
According to the OceanGate website, the submersible is made from carbon fibre and titanium, weighs more than 10,000kg and can reach depths of 13,100ft.
5.45am
About one hour and 45 minutes into the dive, contact is lost with the Titan submersible.
OceanGate said the Titan communicates with the crew on the surface via text messages sent via a USBL (ultra-short baseline) acoustic system.
Read more: Inside cramped Titan submersible missing during voyage to Titanic shipwreck
It said the submersible is required to communicate with those on the surface every 15 minutes or more frequently if needed.
Watch: Search continues for Titanic tourist submersible missing in Atlantic
The same system is used to track the position of the submersible.
9.13pm
Joint Rescue Coordination Centre in Halifax, Nova Scotia, operated by the Royal Canadian Air Force and the Canadian Coast Guard, said the Titan vessel was reported missing on Sunday evening.
Monday 19 June
OceanGate statement
On Monday afternoon, OceanGate confirmed their submersible is missing.
In a statement, it said: “We are deeply thankful for the extensive assistance we have received from several government agencies and deep sea companies in our efforts to re-establish contact with the submersible. We are working toward the safe return of the crew members.”
Coast Guard response
In a press conference on Monday, Rear Admiral John W Mauger, of the US Coast Guard, said they were conducting a search 900 miles east of Cape Cod in collaboration with the Canadian armed forces and commercial vessels in the area.
“It is a remote area and a challenge, but we are deploying all available assets to make sure we can locate the craft and rescue the people onboard,” he said.
He said the submersible had between 70 and 96 hours worth of emergency oxygen left.
British billionaire on board
On Monday evening, it is confirmed that Harding is on board the submersible.
The British billionaire is also a renowned explorer. He has taken a flight into space and holds…
Read More: Missing Titanic sub: Timeline of key events