Provides the first standardized dataset of the Philippines'
Roll-on/Roll-off (RoRo) shipping network, reflecting the 2024-2026
operational state. It digitizes fragmented records from the Maritime
Industry Authority (MARINA) and Philippine Ports Authority (PPA)
into a unified framework for transport modeling. The package includes
108 bidirectional provincial links across the Western, Central, and
Eastern Nautical Highways, complete with GADM-standardized naming,
geospatial coordinates, and metrics such as distance, travel time,
and vessel frequency. Methodology follows Anselin (1988,
ISBN:9024737354) and LeSage and Pace (2009)