No, a documented vessel involves certification of the ownership as a us flagged vessel, albeit a recreational one, and you become, in effect, floating piece of the united states when you float across the line into international waters. It costs some money to have your vessel documented and is not necessary or warranted unless you plan to cruise REGULARLY or extensively in foreign water. I go to the Canadian gulf islands and barkley sound on a semi annual basis and being documented is no real advantage-- I still have to submit to the surely looks from the customs guys who clear you in.
In Puget sound the USCG could careless where you name and hailing port are as long as you have one-- they are very interested in how close you get to the ferry and once you've raised their interest you damn well better be ship shape and in compliance when they board you, as board you they will.
In Puget sound the USCG could careless where you name and hailing port are as long as you have one-- they are very interested in how close you get to the ferry and once you've raised their interest you damn well better be ship shape and in compliance when they board you, as board you they will.