Mongla Port is one of the three sea ports of Bangladesh and is the most eco-friendly port. It is situated on the south western part of the country at  the confluence of Possur river and Mongla Nulla approximately 71 Nautical miles upstrem of the bay of bengal. It is located at Lat 21°26.9' N Long 89°34.4' E in the bay of bengal.The Port is well protected by the largest mangrove forest sunderbans, which has been declared as "World Heritage" in 1977 by UNESCO. Since 1950, Chalna Port started  to function as Government Directorate and in may 1977, the directorate was concerted to an autonomous organaization called Chalna Port Authrity. The Chalna Port Authority was again renamed as "Mongla Port Authority" on 8th March 1987.