In the late 1960s, another proposal, Project 748, neared construction, a nuclear-powered assault transport (with less added requirements than previous designs) of up to 11,000 tons. This submarine was to carry up to 20 amphibious tanks and BTR-60P armored personnel carriers, and up to 470 troops, with the vehicles stored in double-deck hulls contained to both sides of the main hull, all three within an outer shell. The submarine was to be equipped with a torpedo armament of four bow 21 inch (533 mm) torpedo tubes (18 to 20 torpedoes stored) as well as anti-aircraft guns and surface-to-air missiles. It also was to have mine-laying capabilities.