No, K1W1, am not telling you that, unless the Government decided to "pierce the corporate veil" you will be escaping the requirements. Individuals not so lucky.
Now, if that corporation foreign flags the vessel in Florida and operates under a cruising license there is no State tax payable on the purchase price, where you may come at risk is the if during the period the license has lapsed prior to renewal and you are in Florida waters you are liable for sales/use tax if apprehended by law enforcement.
https://taxlaw.state.fl.us/wordfiles...%2009A-025.pdf
Individuals are entitled to the same exemption as noted above.