Persian Gulf at its narrowest, in the Strait of Hormuz. The waters are overall very shallow, with a maximum depth of and an average depth of . Countries with a coastline on the Persian Gulf are (clockwise, from the north): Iran; Oman's Musandam exclave; the United Arab Emirates; Saudi Arabia Qatar, on a peninsula off the Saudi coast; Bahrain, on an island; Kuwait; and Iraq in the northwest. Various small islands also lie within the Persian Gulf, some of which are the subject of territorial disputes between the states of the region. The International Hydrographic Organization defines the Persian Gulf's southern limit
Persian Gulf naming dispute "Persian Gulf" as the "Conventional" name, along with 14 "Variant" names in different languages, such as "Gulf of Iran", "Gulf of Ajam", "Gulf of Basra", "Arabian Gulf", "Persian-Arabian Gulf", "Gulf of Fars", and "Farsi Gulf". In "Persian Gulf States Country Studies" published in 1993 by the Federal Research Division of the U.S. Library of Congress, the authors follow the practise of the BGN by using "Persian Gulf" while acknowledging that the governments of Kuwait, Qatar, United Arab Emirates, Oman and Bahrain "officially reject the use of the term Persian Gulf—as do other Arab governments—and refer to that body of water