I looked into these a little more and the main thing I took away from it was, given their size and payload these aren't really "jet skis," even though the Ukrainians are sometimes naming them such. They are definitely formidable.

I don't think I'd be so worried about them surviving hits from the CIWS. On the open ocean I'd be worried about the possibility of encountering so many drones that the CIWS runs out of ammunition. In a port, I'd be worried about the practicality of using the CIWS at all, but I think the Navy can adapt.

The main thing is that the Navy were sort of deemphasizing stuff like the Phalanx on their recent ship designs, and this is the second time the past couple of weeks that I've read something suggesting they'll probably need to reverse that trend.