The Soviet submarine S-49 was modified to test exotic underwater weapons, including the RPK-6 Vodopad and RPK-7 Veter missile systems.
The submarine's unusual 'double-barrel' bow was added during a major reconstruction in the early 1970s, allowing it to launch the new weapons.
S-49 played a crucial role in the development of the Soviet Navy's advanced underwater weapons, conducting numerous successful launches and helping to pave the way for future submarine-launched missile systems.
