“Japan may not end the movement of its sea units within 2 sea zones of the United States’ mainland territories (Western United States and Alaska).”
I guess that means you can sit in Hawaii (sea zone 26) according to the rules.
8cd22055-d314-45b9-bd9b-ae1bdd0a70db-image.png
I don’t see anything else about restrictions on being near UK/ANZAC territories.