Hello,
I've read this rule on page 25:
"Ship units may march from an adjacent sea area into a friendly Port, or may march from a Port into an adjacent sea area. However, Ship units may never march into a Port owned by another player."

After reading inumerous other posts about "adjacent areas" I had this last question in my mind, since Shivering Sea is at one side of the map and Winterfell Port at other side BUT they are connected by Winterfell land.

Q1: Ships can march from Shivering Sea to Winterfell Port?
Q2: Storm's End can have Ships marched from 3 different sea areas? (ShipBreaker Bay, EastSummer Sea, Sea of Dorne).

thanks for your time

Q1. No

Q2. No. Only Shipbreaker Bay.