I had to see if there was any way I could still make the the navy useful for amphibious support vs. coastal forts. So I built a 6500 point fleet + gave it 170 points of transports for support (that's right, it forms a staggered double file 2-3 miles long), and gave command to Farragut with Dahlgren assisting. The jpg contains the results (message 7). I have no problem with the damage ratio.
This doesn't need to be moddable variables, it should just be fixed.