Soviet nuclear-power submarine K-19
K-19 became the first Soviet nuclear-power submarine. It was an excellent submarine ship by its performance characteristics. During the first combat patrolling of the ship the serious breakdown in the reactor tank occurred on its board. It took place in the North Atlantic, July 4, 1961. Regardless of their own health the seamen were keeping a ship-damage control. In spite of everything the ship had remained at duty right down to 1990.