home/hailing port can be anywhere within the reach of uspostalservice--doesnt have to be home or marina--can be st thomas, usvi!!!!! even if you live in colorado and have the boat in santa barbara!!!!! LOL is easy!!!!
and you can buy /sell in any place in the world!!!!!! doesnt matter--if you stay out of country for a year--yes, was again changed, then you can avoid the sales tax. kali was a yr just last yr--they change it so much is a good thing to remain out a yr just in case-besides, is funner..LOL...if you return within the specified period, you pay the sales tax in the locale in which you berth the boat permanently.
my boats have all been documented--i have had many since 1990....when cruising is a wise idea to be documented--is easier to find boat in event of theft and is recognized by the nations to which you sail , whereas the state reg is not recognized.