Port Authority of Thailand (PAT) is a state-owned enterprise under the Ministry of Transport. Founded under the Port Authority of Thailand Act 1951 with the objective To manage and bring about the prosperity of the port business For the benefit of the state and the people. Currently, the Port Authority of Thailand is responsible for managing important ports such as Bangkok Port Laemchabang Port Chiang Saen Pier Chiang Khong Pier And Ranong Pier.