Sec. 1. The territorial area of the South Harbor, Port of Manila, hereinafter referred to as the South Harbor Port Zone, is hereby expanded eastward up to Bonifacio Drive and shall be more particularly described as follows:
"Beginning at a point marked on the plan, being the intersection of the bulkheads fronting the Manila Hotel and the Philippine Coast Guard Building; thence along the existing bulkhead fronting the Manila Hotel and Presidential Landing Bulkhead; thence westward along the Presidential Landing Bulkhead to point 3, at the bulkhead along the Presidential Landing; thence northward across the Presidential Landing Basin perpendicular to the bulkhead fronting the Philippine Coast Guard Building at point 4, at the west boundary of the Philippine Coast Guard Building; thence along the existing bulkheads and the concrete edges of decks of Piers 15, 13, 9, 7, 5 and 3 to point 5, at the northwest corner of Muelle de San Francisco Street; thence westward across Engineering Island Basin to point 6, at the end of the existing Engineering Island breakwater; thence westward along the prolongation of the south boundary of the existing Engineering Island Basin breakwater to point 7, at the west boundary of the existing bulkhead of the western side of Engineering Island to point 8, at the north western side of Engineering Island; thence eastward along the existing south river wall of the Pasig River to point 9, thence along the existing south river wall of Pasig River up to northeast side of M. Roxas Bridge to point 10, thence southward at the intersection of 25th Street and Bonifacio Drive along Bonifacio Drive to point 11; thence westward at the intersection of 25th Street and Railroad Street, to point 12, thence to point 1, the point of beginning."