USC&GS Romblon was a steamer, owned by the Philippine Insular Government, that served exclusively in the Philippines. The ship was purchased by the Philippine Bureau of Coast Guard and Transportation to support both government logistical and administrative travel needs as well as the usual functions of a coast guard vessel. The vessel was transferred to the United States Coast and Geodetic Survey serving as a survey ship from 1905 to 1932. Romblon and Marinduque were sister ships, both built in Japan.