K-77 was a "Project 651" diesel–electric submarine built for the Soviet Navy during the 1960s. Commissioned in 1965, the boat was armed with long-range cruise missiles to carry out its mission of dest
K-77 docked in Providence, Rhode Island
A photo of sister ship K-24 in Peenemünde, Germany. The Argument (Front Door) radar is at the front of the sail, with the Front Piece datalink above it. Aft of the sail, the rear missile mount is visible, elevated to its maximum of 15°.