I've done this a number of times also, and the others' suggestions are good. But just to be safe I try to have copies of the boat's registration
certificate and insurance
, in addition to cruising permit and letter from captain and/or owner. Usually it's overkill, but in some islands (not Bahamas...I think it was Barbados
or St. Lucia) I've had to wait for a supervisor to "interview" (read: interrogate) me, copy all the documents and have me sign a statement! I usually have both paper, and pdf copies on my phone
Airlines are usually pretty easy but you never know when some customs
or immigration officer may get an acute case of "epauletsy" (thanks - Chris Doyle - for that most excellent descriptive term of what can happen once certain individuals put on a uniform of authority)....