Ahoy Capt. Sue,

My only advice would be - Don't take any advice from Strangers on the Internet - Wait a minute ...
I beg every Yacht Owner to start here -
https://chambers.com/legal-rankings/tax-international-tax-usa-2:638:225:1
The Moorings base in the BVI may be the best location for your Phase Out based on it being Their largest base, if They let You move it here?
If They say No - You can Thank the 'Barbarians at the Gate'.

Fair Winds, Brent from thecaptainscompass.com