I will be travelling to the US as a tourist for a few days (I have an ESTA, I'm from an EU contry). When you arrive at the border, you must fill a U.S. Customs and Border Protection Declaration Form 6059B, which the flight attendants usually give out during the flight. What should I put in the box "US street address (hotel/destination)"? I will be living on a boat that will not stay in the same port.
edit: a private boat, not commercial
For APIS data, CBP says the following:
Transit to a cruise ship: CBP will accept, "transit to Cruise Line and Vessel/Cruise Name" in the address field. The city of cruise embarkation should be included.
Example:
Street Address: Transit to MV Princess of the Seas
City: Miami
State: FL
ZIP Code: 99999
Presumably the same information is appropriate for the customs form. If the boat you will be staying on is not a commercial vessel, I would still supply its name and, as specifically as you are able, the place where you will embark.
When I traveled in the USA (a few years back) I did not have more than the first night booked, when I talked about that with the immigration officer he said I was right in putting in that first address, as that is what they needed.
So I would say that the name of the boat and the address where you get on should do for you.
When asked about it, you can explain the boat will be on the move and have the itinerary in your hand luggage, in case they want more addresses.
I actually asked an immigrations officer about this about 15 years ago (before ESTA, you filled out the same questions on a paper form on the arriving flight) as I was going to stay in 3-4 different locations during my stay in the US, and the answer was simply: Pick one, preferably one with either a resident or a hotel/motel. I've done that ever since. Nobody I've used has ever been contacted by INS or similar either so it's probably just for reference - in case it's needed.
