Беркут
The Soviets assigned a project number to each new design. The numbers were non sequential, submarine designs had numbers 600-900, small combatants 100-200 and large ships 1000 plus. The designs also had covernames, major ship classes were named after birds, e.g., Orlan = Sea eagle, Berkut = Golden eagle, Kreschet = Gyrfalcon. Submarine designs were given fish names, e.g., Akula = Shark, Som = Catfish, etc.