We have updated our Community Code of Conduct. Please read through the new rules for the forum that are an integral part of Paradox Interactive’s User Agreement.
You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
I have vassalized a few countries, and fully expected to extend the reach of my ships this way. I can move through my vassals' lands with land armies without restriction, but I can't use their ports. Why not?