The Oaxaca class are offshore patrol vessels, constructed and designed by and for the Mexican Navy. The class is named after the Mexican state of Oaxaca. The Mexican Navy has requested six of these ships with 2 already in service, 2 in construction, which were disclosed on June 1. on the Navy anniversary, with the name PO-163 INDEPENDENCIA, which is to celebrate the 200th anniversary of the Independence of Mexico. Also, another ship PO-164, named Revolucion, is in the process of raising the Mexican flag in a couple of months. 2 more to be constructed in Navy's Naval Shipyards.