Yes, it is "An Eye in the Sea" out of the PTW-folder. Only modification are two added places for canal cities for less isolation. But the map turned out more difficult than expected. Coal and Salpeter are only in the barbarian infested middle island and there is only one iron mine and one oil field on each two player island. My iron mine was next to Constantinopolis, so I had to fight Theodoras Legions with Spearmen, Archers and Horsemen and had to endure her Dromon raids more or less helpless. Until I was able to gain access to coal and salpeter I (and everyone else) was only able to build light naval forces (Galley, Ocean Galley, Corvette). And no, I did start only the war for iron against the Byzantines. I never meet China (conquered by the Hittities) and Austria (conquered by Maya) and Maya and Hittities started their war against me by raiding my salpeter towns.