Passport: : For US passengers a valid passport (6 months) or original birth certificate is required to board the ship.

Passport Information links:

US passengers
Non-US passengers

Expired passports are not acceptable. (In addition, non-US citizens who have previously been admitted to the United States for permanent residence must carry their Permanent Resident Card, commonly known as a Green Card. Aliens should contact the appropriate consulate to inquire about necessary travel documentation. Each passenger will need a photo I.D.