UK Island Ports

[unmerged(19411)]

What are the reason for their changes? Historical ports perhaps?

 

[unmerged(14683)]

What are the reason for their changes? Historical ports perhaps?

I guess it's partially based on the port sizes and attempt to make naval bases really important instead of allowing ships to dock in any province.

I suggest discussing the problem on the naval thread, Lobster and MDow are more competent then me to answer that question.