jddods
Prince
I started a game with the express purpose of finishing this achievement... phew, this was great stuff. And a refreshing change of pace for a higher diff game where Hiawatha doesn't runaway at all despite city-spamming
Spoiler :
I sort of cheated this one, an ally CS had built an ironclad the AI player with coast wasn't going to unless I pulled back and waited till they caught up tech wise.
So I did a save, declared war on my ally, sunk the ironclad, after shooting it up with my frigates, got the achievement and reloaded.