just because it can find the ship doesn’t mean it cab hit the ship.
The Checkmate wasn’t in response to this, or any other single weapons system.
It was in response to CNNs post, the wholesale evisceration of America’s manufacturing base and culture by a clever, determined and persistent competitor.
If it knows the exact location in real time, then an ICBM warhead can be guided to hit it, or at least come real damn close. We currently have difficulty shooting down ICBM warheads. A very quiet sub could also be vectored into the carrier's path.
Question: if one of our carriers gets involved in a dispute near China, and China destroys the battle group with a nuke, how likely is it for even a Repub president to respond with a nuclear attack on the Chinese mainland? Particularly if doing so would result in launches against our cities by either China or its ally Russia?