The port of Chittagong is located in Bangladesh on the Karnafuli River near its opening into the Bay of Bengal. It has defined seaward and upper port limits. The seaward approach is north of the 18.28m depth contour approximately 46 nautical miles from shore. The port features three designated anchorages - Anchorage A for deep draft vessels, Anchorage B for vessels entering within 24 hours, and Anchorage C for lightering or vessels not entering within 24 hours. Several navigation aids guide ships including lighthouses at St. Martin's Island, Cox's Bazar, and Kutubdia. Mariners are advised to avoid prohibited anchorages and contact port authorities upon arrival and