This was reported by the press service of the Foundation for Advanced Research.
"On May 8, 2020 at 22:34 Moscow time, the Russian autonomous uninhabited underwater vehicle Vityaz plunged to the bottom of the Mariana Trench," TASS quoted the message.
It is noted that the sensors of the deep-sea vehicle recorded a depth of 10,028 meters.
At the same time, a pennant dedicated to the anniversary of the Victory was delivered to the bottom of the Mariana Trench.
The device also spent three hours mapping, photo and video shooting.
Earlier, Russian cosmonauts Anatoly Ivanishin and Ivan Wagner on board the International Space Station congratulated the Russians on Victory Day.