I'm still no seeing where there isn't a whole world map, I could have sworn that the Devs said even the Atlantic was in SH IV but it just happened to be empty. Although I'm sure modders will fix that one...
If you're basing the idea that there isn't the whole world on the one video I was taking that map to be one of the single mission ones, not the campaign map.
Also maybe the confusion is over the word "map". When I say the whole world map is there I mean that things like the Atlantic are in the game and you can sail there. When there have been comments over 15 maps, that could mean there are 15 nav maps available, as opposed to limiting it to 15 ocean zones maybe? I'm pretty sure the whole world is modeled, so that's what I mean by full world map. If it's a navigational chart thing then I don't mind if there isn't one chart to rule them all, having seperate nav charts for geographical areas not only makes sense but means you could get higher fidelity on those charts for depth and the like.
So I'm a little confused...but I could have sworn I saw/read that all of the oceans will be modeled contiguously.