K-29 was a Soviet submarine that belonged to the Project 629 class, which was designed for strategic nuclear deterrence. Launched in 1960, it was equipped with ballistic missiles and played a significant role during the Cold War. The submarine was notable for its ability to operate stealthily underwater, making it a crucial asset for the Soviet Navy. In 1989, K-29 gained attention due to a tragic incident involving a fire that resulted in the loss of several crew members. The submarine was eventually decommissioned and scrapped, but its legacy remains a part of naval history, highlighting the risks associated with underwater military operations.