The USSR felt left behind in the de facto submarine race and rushed trough many poor desinges and commisioned several subs that were too dagerouse to deserve to be used of the test range. It was built in 1959 and scrapped in 1990. It had a complement of 125-139 officers and men. It was built at Severodvinsk shipyard. A late 1950s Soviet 658 class (NATO reporting name Hotel-class submarine) could stay submerged for up to 60 days, only limited by both the need for food and the crew's physical/mental health. It carried some of the newly devised R-13 SLBMs.