My second favorite SNES game, I played the living heck out of it. Ernst was my boy, and as I recall to win as Ernst you have to map every possible square it is possible to map and then take the girl to new south China city that appears. Either way it is both infuriating and hilarious watching a newbie play a game at which you're an expert. Also infuriating as a geography expert, you were in the White and then Kara Sea, not the North Sea, it was the Hanseatic League, and you were off Hokkaido not Honshu, bah.
Although James did one thing on his first try at a disadvantage that I was almost never able to do even with the advantage, win a duel. I knew what the letters meant and how they applied to swords and armor but never figured out what the numbers meant. I lost duels over and over, one of the reasons I never let my flagship get close to the enemy flagship (the ship with the ! not the 1).