Wonderfull mod, skullz613. Thank you very much! It is especially very usefull for maps like your "Washington DC GM" map which makes it now possible to place a harbour onto those river places where the game otherwise won't allow it due to the water is not deep enough.
B.t.w. can you please make this mod for the other horbour buildings in the "Pack/America/Buildings" menu possible?

Transportation Default Harbors Place Anywhere XXL 1.1
Place the default harbors where you want