ARM Oaxaca (PO-161) is the lead ship of the Oaxaca class of patrol vessels, constructed by and for the Mexican Navy.
It has a length of 282.2 feet (86.0 m), a draft of 11.8 feet (3.6 m), a beam of 34.4 feet (10.5 m), and displaces 1,850 short tons (1,678.3 t).
Primary armament is a single OTO Melara 76 mm naval gun, with a pair of OTO Melara 12.7 mm remote controlled naval turret Mod. 517 with M2 12.7mm machine guns on each side, and an Oto Melara single 30/SAFS 30 mm cannon aft.
A helipad on the afterdeck has handling capabilities for a variety of helicopters, such as the Panther, Fennec, or the Bolkow Bo 105 Super-5.
The ship has a cruising speed of 20 knots (37 km/h), carries a complement of 77, and has provisions to carry a group of 39 special forces and/or marines for a variety of missions.