How far back do you have to go for this to be possible?
The idea is that water is just like land, claimable. I expect one nation to claim a significant portion, something like a UK that goes naval crazy and claims all water outside of 200km from land or something silly like that.
For reference here is the current non-country waters of Earth:
http://upload.wikimedia.org/wikiped...aters.svg/2000px-International_waters.svg.png
The idea is that water is just like land, claimable. I expect one nation to claim a significant portion, something like a UK that goes naval crazy and claims all water outside of 200km from land or something silly like that.
For reference here is the current non-country waters of Earth:
http://upload.wikimedia.org/wikiped...aters.svg/2000px-International_waters.svg.png