Tests for independent swimming and exploration of the seabed. Did exactly that the crew of the deep-sea underwater station as-31 “Losharik”.
To confirm their qualification, seamen annually pass examinations, pass “news“.
Experts do not exclude that the sailors practiced near the bottom of the complex maneuvers, including maneuvering a few meters from the bottom and placing the apparatus on the ground.
Nikolay Filin, captain of the 1st rank, after this flight was supposed to retire. During a training exercise he was involved in the control of correctness of actions of the crew.
Experts believe that the sailors could be saved, if it left the deep-water apparatus. However, in this case the ship itself would not be restored.
Killing 14 officers of the Russian Navy and another 4-5 people were hospitalized.