[3] Onne is a relatively major port in the region[4] and has several quays with facilities for cargo ships up to 60,000 gross tons.
[5] It is also the main base for the offshore activity in the region, and a large number of supply-vessels call at Onne every week.
[7] The Onne Oil and Gas Free Zone also contains Shell Nigeria Exploration & Production Company, one of the largest bases of Shell offshore in Africa including berths leased out to ExxonMobil, TotalEnergies and other oil companies.
[citation needed]It also has a container terminal (West Africa Container Terminal) with a deep draft of 12 meters and frequented by vessels up to 4000 TEU in size belonging to Maersk lines and Pacific International Lines and CMA CGM.
[11][12] The city is part of Odido District in Eleme Local Government Area of Rivers State, Nigeria.