According to rumours, the Titan submarine, which has vanished in the depths of the Atlantic Ocean, has seven backup systems for getting back to the surface, one of which is designed to transport everyone on board back to the surface even if they fall unconscious.
Two systems have been utilised to communicate in the submarine, under which text messages are received by the boat or ship on the surface, according to an American TV reporter who boarded Titan last year.
The other is a set of safety sounds or signals that the submarine emits every 15 minutes to let them know it is operating properly.
The submarine that vanished on Sunday night was carrying five passengers.
Foreign media reports that these two systems came to an end an hour and forty-five minutes after Titan sank to sea level.
According to the American journalist, there are two possible outcomes: either all power is shut off as soon as the submarine enters the water, or it explodes due to a defect or pressure, both of which are extremely tragic and deadly.
