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This submarine has been missing for two days. Archive footage of the »Titan«, a mini-submarine of the company »Oceangate Expeditions«, with which the company offers tourist trips to the sunken wreck of the »Titanic«.

The submarine took off from Newfoundland on Sunday morning at around 6 a.m. local time in the direction of the Titanic wreck, which lies at a depth of 3800 meters at the bottom of the Atlantic Ocean. After one hour and 45 minutes, the "Titan" lost contact with the escort ship. There should be a pilot and four guests on board. The expedition to the remains of the Titanic costs $250,000 per person.

The Canadian and U.S. Coast Guards are searching for the submarine with ships and planes. It is unclear whether the submarine is underwater, or whether it has surfaced and is unable to communicate.

John Mauger, U.S. Coast Guard:
"We are looking about 900 miles (1448 kilometers) east of Cape Cod, in a water depth of about 13,000 feet (3,963 meters). It's a remote area and it's a challenge to do a search there."

The authorities also want to bring a remote-controlled vehicle, which can reach a depth of 6000 meters, to the suspected accident site as soon as possible. The "Titan" is 6.70 meters long and should be able to supply its crew with oxygen for 96 hours. By noon on Tuesday German time, about half of this time had passed.

Larry Daley, Titanic expert and diver:
"Deep sea diving is very dangerous, but it's high-tech. With each passing year, the equipment is getting better, the technology is getting better, and so on. That's why I'm full of hope. I've been in the submarine for twelve hours, there's a separate breathing system on board, and if it's properly maintained – like changing the filter of the CO2 scrubber – you can stay down for a few hours."

According to the company, 28 people visited the wreck of the Titanic with the "Titan" last year. The passenger steamer had sunk in the North Atlantic in 1912 on its maiden voyage from Southampton to New York, killing more than 1500 of the 2200 people on board.

According to court documents, there was already a technical problem with the battery of the tourist submersible during an expedition last year.