The Map page has been updated to reflect the new world boundaries for boating: https://map.shardsofbritannia.com/

Edit: The map has been updated once more to add Yellow lines along the shared waterways/harbors in Yew/Skara, Britain/Cove, and Minoc/Wind. The following labels have also been added: Incomplete Area (off-limits), Castle Britannia, Yew Jails, Snowball Fight Arena