Rescuers heard a knock in the search area for a missing tourist bathyscaphe in the Atlantic

This is stated in an email from the National Operations Center of the Department of Homeland Security, which was reviewed by Rolling Stone magazine.

«A Canadian plane searching for the missing underwater vehicle Titan, which did not return on Sunday from an expedition to the wreckage of the Titanic, recorded a „knock“ at 30-minute intervals coming from the area where the divers disappeared, » Rolling Stone reports.

We are talking about the anti-submarine patrol aircraft P8 Poseidon, which recorded a «knock» with the help of a sonar buoy placed in the disaster zone of a tourist bathyscaphe. Four hours after the sounds were heard, an additional sonar was installed in the same area, and the «knocks» were heard again. The letter itself was sent on June 20.

Earlier, the oceanographer stated that it was impossible to save those on board the tourist bathyscaphe because of the depth, which makes it impossible to detect the underwater vehicle. He noted that in history there are no cases of successful rescue of people at such a depth — the wreckage of the Titanic lies at a depth of almost 4000 m. According to the expert, the only chance for their salvation remains only if the bathyscaphe is able to rise closer to the surface of the ocean. As noted in the Rolling Stone article, the underwater rescue vehicle can descend to a depth of about 2,000 feet (about 600 m), and if the missing bathyscaphe is found deeper, then it will be possible to get to it using an underwater drone or underwater transport with remote control. The air supply in the bathyscaphe remains for about a day.