the hunt for

Belogorod: The Russian Submarine That Keeps the World Guessing

"Not only reserved for spy missions under the Arctic ice, but the Belogorod will apparently also carry Russia’s Poseidon nuclear torpedo. There is probably space inside the double-hulled submarine for up to six of the massive torpedoes, which are each roughly thirty times larger than conventional heavy-weight torpedoes and are the largest torpedoes ever developed."

https://nationalinterest.org/blog/buzz/belogorod-russian-submarine-keeps-world-guessing-160226