2m39 Poseidon Kanyon Status-6

The Poseidon (Russian: Посейдон, "Poseidon", GRAU index 2M39, NATO reporting name Kanyon), previously known by Russian codename Status-6 (Russian: Статус-6), is an autonomous, nuclear-powered unmanned underwater vehicle reportedly in production by Rubin Design Bureau, capable of delivering both conventional and nuclear warheads.

https://www.cgtrader.com/3d-models/military/rocketry/2m39-poseidon-kanyon-status-6