They lack the ability to penetrate battleship armor and only pack a 488lb warhead. But no ship today comes close to that kind of armor.
In any case, this LCS upgrade cannot survive a duel with a T-72 tank on the beach, or defend itself from the ubiquitous motorboat close in attack. It also has no ASW defense.
It’s a dog.
It would be a bit absurd for such a vessel to come in to within 3000 meters of enemy forces ashore (direct fire range of a T-72, more or less). Ordinary modern 155mm field artillery would be much more dangerous, going out to 20-30K or so. But that is true for any ship.
Such targets are best left to air attack.
“In any case, this LCS upgrade cannot survive a duel with a T-72 tank on the beach, or defend itself from the ubiquitous motorboat close in attack. It also has no ASW defense.”
The upgraded LCS will not win this competition.
The National Security Frigate will.
https://www.usni.org/magazines/proceedings/2014-04/its-time-sea-control-frigate
The LCS upgrade is only one proposal. The other proposals are actual frigates. It’s thought the current problems with the actual LCS are going to make the “upgraded to frigate” version the odds-on least favorite. The others mount CIWS guns and such.
A WW2 frigate or destroyer could not penetrate battleship armor either, as Taffy 3 demonstrated.