The Kashalot Class Submarines - entered into service near the end of the Soviet era in 1988. Built from a single hull, the submarine is nuclear powered and particularly adept at low depth missions and intelligence gathering. They were not equipped with torpedos.

The side profile of the watch has a unique Volcano-like appearance with a larger caseback gently tapering to the bezel and dial opening. A lugless design is a different take on watch design.