Kronshtadt-class battlecruiser

The Kronshtadt-class battlecruisers, with the Soviet designation as Project 69 heavy cruisers ("Тяжёлые крейсера проекта 69"), were ordered for the Soviet Navy in the late 1930s. Two ships were started but none were completed due to World War II. These ships had a complex and prolonged design process which was hampered by constantly changing requirements and the Great Purge in 1937.