Puerto Princesa City is located in the middle of the big stretch of the island, and as such, serves as the hub of transport (of goods and passengers) activities for both the northern and southern municipalities of the province.

Royal Decrees later provided incentives to settlers, and by 1883 the settlement had flourished into a town with many infrastructures, among them its well-built port.

PMO Puerto Princesa was organized on June 1, 1977 by the Systems Implementation Group (SIG) of the Philippine Ports Authority.

It coordinated the smooth turnover of properties and port responsibilities from the then Department of Public Works and Highways and the Bureau of Customs, respectively.

The PMO embarked on expanding operations to Coron, El Nido, Culion, Cuyo, Brooke's Point and the cluster ports of Liminangcong, Taytay (poblacion), Roxas, Narra, San Vicente and Araceli.