Just the US Coast Guard Document is all that is required. I always take a copy of the document, as well as copy of the passports, plus the crew list and clearance from the last port you were in. The origional document should be presented, the origional passports need to be presented, as well as any visas required, and several copies of the crew list in the language of the country you are entering, as well as clearance from the previous port. I have also been asked for insurance proof. Some countries want seriel numbers of engines, motors, inflatables, vehicles, and even radios and electroncis--this latter is un common. Occasionally there will be request of stores lists too, including liquor. Some countries will allow bond, others will not. We traveled with pets, and had an international pet passport--basically a health and vaccination record, as well as the US DA clearance papers. Bob Austin