In most of the US (which doesn't say anything about the offshore
territories like Florida) a motor
vehicle which has been abandoned in a storage
facility is governed strictly by state law. The vehicle is titled property, and it belongs to the title holder "period". The storage
operator usually has to apply for a "warehouseman's lien" which says "the vehicle is worth xx dollars, and there are xxx dollars in unpaid storage costs due on it" which then allows the warehouseman (garage or storage operator) to take title of the vehicle after a legally defined period. That could well be a minimum of six months.
The entire process will be defined very specifically by state laws, and those may exist in the Florida
Statutes if you want to do a little DIY research
before getting a lawyer.
Failing to follow the statutes to the letter, can result in long expensive legal
battles and criminal charges (grand theft, wrongful conversion, etc.) against the poor SOB who touches the boat without proper title.
Having a boat with an alien registration
and NO TITLE at all? Another layer of complications.
The best advice I think was 1) Get a lawyer or 2) Contact ICE, since the boat may have entered the US illegally and may be subject to federal search and seizure. They won't want to seize an old clunker, that costs them money
and ties up their docks too. But you never know.
Meantime, I'd sent a certified letter by paper mail to the "crew" that also is probably the owner. Perhaps advising him that you will be contacting ICE if you do not hear from him within ten business days. And start building the paper trail.
Look at it this way: If a sea lion was sleeping on that dock
? You'd be SOL and unable to move it at all, ever. Things could be worse, at least the boat won't smell like dead fish
in the morning.