 However, the designers recommended an increase in the main armament caliber to , a strengthened anti-aircraft battery and reductions in the armor protection, speed, and range.The opening of Operation Barbarossa a month later rendered these plans moot as both the Project 82 and the "Kronshtadt" (Project 69) classes were put on hold.The project was revived in 1943 with a new requirement issued on 15 September.