US citizens do not need a visa for tourism of 30 days or less, you will need a passport valid 6 months beyond your intended stay that has at least 1 blank visa page. For recent travel requirement changes and more detailed information, please refer to the State Department website. For further information on entry requirements, particularly if you are planning to enter on a private sailing vessel, please visit the Permanent Mission of the Republic of Vanuatu to the United Nations website.