"K-55" . "81.4" . . "1968-06-02" . "9.5" . "Suffered a major reactor accident, 1972. Deemed too extensive to repair and subsequently scrapped" . . . . . . . . "1974-08-19" . . . . "Soviet submarine K-64" . . "Soviet submarine K-64 #Reactor accident" . . "Project 645 submarine" . . . "Soviet submarine K-64" . . . "1969-04-22" . . "1971-12-31" . . . "''K-64''" .