Northern Marianas - Facts

Sep 29, 2025

Northern Marianas FAQs

Pre-Arrival - Boat; Skippers are advised to provide at least 14 days advance notice of their intention to enter the Northern Marianas at Saipan -  do not arrive unannounced. See Formalities for details.
Pre-Arrival - Crew: All foreign crew arriving by private vessel/yacht must have the appropriate US visa.  See Immigration for details.
Where can I enter?
The island of Saipan is the only official port of entry for the Northern Marianas.
Are fees high to enter by yacht?  There are no fees charged by Customs/Biosecurity officials but there is a fee to obtain a US Visa prior to arrival.  See Fees for more information.
What security concerns should I know about?  Cruisers report a friendly and welcome island.  See Security for more information.

Northern Marianas Facts for Sailors

  • The Commonwealth of the Northern Marianas in the Western Pacific has the special status of a US Commonwealth. The American influence is strong, although the legacy of Spanish colonial rule can also be seen.
  • The Northern Marianas comprise 14 volcanic islands that stretch north to south in almost a straight line with the the southernmost three - Saipan, Rota and Tinian - the main islands. Guam is geographically part of the Marianas, but politically separate.
  • The islands were military-dominated for many years and access was forbidden, but that is no longer the case. Formalities have eased greatly and visiting yachts are welcomed.
  • The islands attract a few cruising yachts every year, most of these come from Guam.
  • The southern islands are the more developed, while some of the northern islands are wildlife reserves and cannot be visited.
  • Most facilities are in Saipan, which is the most developed island and attracts most tourists. Tinian is less developed than Saipan, but as it has a large farming community, fresh produce is easily available and of good quality. Provisions in the outer islands are scarce and one should not expect to be able to buy more than the absolute minimum.
  • The entire group is subject to typhoons for most of the year, another reason why cruising boats rarely sail there.
  • The Battle of Saipan which was fought from June 15 to July 9, 1944 between Japanese and US forces was one of the major campaigns of World War II.
  • After Japan's defeat in World War II, the Northern Marianas were administered by the United States as part of the United Nations Trust Territory of the Pacific Islands.
  • In 1975 the Northern Mariana islanders voted to join the United States and the island became a municipality of the newly-formed Commonwealth of the Northern Mariana Islands in 1978.
  • In 1986, the islanders of the Northern Marianas including Saipan became United States citizens and the Northern Marianas formally became a part of the United States of America.

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