Source: Navy Recognition
The Krasnodar diesel-electric submarine of project 636.3 was fully deenergized and lied on the seabed in the Black Sea during training, Black Sea fleet Spokesman Alexey Rulev said.
“During the exercise the submarine lied on the seabed at a depth of 20 meters from the surface. According to the mission, it remained fully without power for two hours, the crew ceased operations, and the duty service was carried out by a minimal number of the personnel,” he said. The submarine trained lying on the seabed in the Black Sea, he added. “After the training the Krasnodar successfully surfaced and continued combat training events,” Rulev said.
Read more at: https://www.navyrecognition.com/index.php/news/defence-news/2018/october-2018-navy-naval-defense-news/6561-russian-submarine-krasnodar-hides-on-ocean-floor-during-black-sea-drills.html