


A separate accident had disabled the long-range radio system, so they could not contact Moscow. On 4 July 1961, under the command of Captain First Rank Nikolai Vladimirovich Zateyev, K-19 was conducting exercises in the North Atlantic close to Southern Greenland when it developed a major leak in its reactor coolant system, causing the water pressure in the aft reactor to drop to zero and causing failure of the coolant pumps. Nikolai Vladimirovich Zateyev, commander of the submarine at the time of the nuclear accident 1.1 List of crew members who died after the accident on 4 July 1961.Over its service life, it ran 332,396 miles during 20,223 working hours. Due to a large number of accidents during its construction and service life, it gained an unofficial nickname " Hiroshima" among naval sailors and officers. K-19 was one of the first two Soviet submarines of the 658 class ( NATO reporting name Hotel-class submarine), the first generation nuclear submarine equipped with nuclear ballistic missiles, specifically the R-13 SLBM. Not to be confused with Soviet submarine K-219.
