In a recent game while at war with the Drengin they attacked with a ship that was unstoppable. It seemed every time its experience increased its hp was fully restored, but I’m not certain that’s the reason, I don’t have the save anymore. The ship had 42ish hp when I first attacked it and after destroying 4 of my ships (1 ship [48 damage] then 2 ships [96 damage] then 1 ship [48 damage]) its hp was 65. My ships were doing 48 missile damage each and the Drengin ship only had 1 armor defense.