Sorry but Kursk was torpedoed and not by its own

[Raptor1]

The damage you point to is completely incosistant with damage caused by the Mark 48. The Mark 48 has a proximity fuze, which means that it will detonate outside the submarine, leaving no such hole. Even if you say it exploded inside for some reason (Assuming the Mark 48, with it's blunt nose and all, could even penetrate both the inner and outer hulls, which I doubt), the damage such an explosion would cause would easily obliterate the area where it entered.