Frustrated with the lack of large sea-based games I adapted the standard caribbean map... the result is a very large - but VERY playable - map. Friends and I play it on LAN for hours and hours without lag. This is definitely a no-rush game, and you certainly need to hone those sea-faring skills to win through.
Now I don't profess any programming knowledge, so go easy on me. I simply compared the differences in code between the regular maps and those made by the experts here (i.e Gandalf). If anyone can reduce the size a touch without making the islands look weird, then by all means repost it. But I kind of like the feeling of being lost at sea!?! See what you think.
Rating: 3
Good large map, plenty of ocean for ships to battle.
Additional Comments:
I played 2vs2 (2 Human against 2 computers) on moderate. It was fairly easy on moderate, there wasn't enough sea battles. Will try on hard or expert.