Realizing that the establishment and operation of port authorities in other countries led to improved port operations, it was felt that the same benefits could be derived with a national port authority to administer and manage the country's ports. Hence, the Philippine Ports Authority was created under Presidential Decree No. 505 which was subsequently amended by P.D. No. 857 in December 1975. The latter decree broadened the scope and functions of the PPA to facilitate the implementation of an integrated program for the planning, development, financing, operation and maintenance of ports or port districts for the entire country. In 1978, the charter was further amended by Executive Order No. 513 the salient features of which were the granting of police authority to the PPA, the creation of a National Ports Advisory Council (NPAC) to strengthen cooperation between the government and the private sector, and the empowering of the Authority to exact reasonable administrative fines for specific violations of its rules and regulations. By virtue of its charter, the PPA was attached to what was then the Ministry of Public Works and Highways (MPWH) which also served as the executing agency for all port construction projects. Under this set-up, PPA prepared the general plans, programs and project priorites while the MPWH was responsible for detailed engineering, actual construction and/or supervision of port construction projects