"Is there any known bugs with this?"
I played the mod along 10 turns in RTW 1.3 and i havenīt found anything.You must only to be careful to made not to long ship,otherwise they will end with a lot of the ship over the land if you turn this near the cost.
"Have you tried inserting this into RTR or other Mods?"
No idea...this was only a test,that i made because our mod map will be much more bigger than the original map ...I heavenīt never thought of doing it into a separate mod,but if the others members of my team agree,why not...
"How does it behave on the campaign map?"
Gameplay screenshots: