The_Sub_Hunter on Twitter: "Soviet Echo class guided missile submarine These were first generation submarines designed to fire their missiles from the surface Two types were built the first project 659 NATO echo
2x Project 670M Chayka/Charlie II class SSGN & 2x Project 675/Echo II class SSGN : r/submarines
Front of the sail on a Soviet Echo II. Hidden Radar used to communicate with P-6 ASM : r/submarines
Project 659 / Echo I Project 675 / Echo II - Russian / Soviet Nuclear Forces
SSGN Oscar II Class (Project 949.A) (Kursk) - Naval Technology