The need about four of these nuclear-tipped attack submarines so they can keep three at sea while having one in port for resupply and refurbishment. Just having one such weapon makes it more difficult for the followers of Muhammad in Iran to nuke Israel without retaliation but three at sea at all times will all but guarantee Iran (and many places to the east of the targets in Iran would be uninhabitable for a few millennia.
I truly hope this weapon system puts the fear of God into the Iranians, but remember that al-Lah is not the God of Abraham, Isaac, and Jacob. Al-Lah is very likely Saytan which is why the Mullahs issued a fatwa calling for the death of Salman Rushdie when he wrote the Satanic Verses.
These seventh century savages don't fear God, they want to die for Allah. And don't forget about the 12th imam. These morons believe it will take a cataclysmic event for him to return and nothing says cataclysmic like a nuclear explosion.