ARM Sonora (PO-152) is a Durango class

Durango class

The Durango-class is an Offshore Patrol Vessel class in the Mexican Navy. This class of ship features stealth characteristics. The entire class was designed and built in Mexico. These oceanic patrol vessels are used mainly in drug interdiction and coastline protection.-Ships:- External links :*...

 oceanic patrol vessel in the Mexican Navy

Mexican Navy

The Mexican Navy is the naval branch of the Mexican military responsible for conducting naval operations. Its stated mission is "to use the naval force of the federation for the exterior defense, and to help with internal order". The Navy consists of about 56,000 men and women plus reserves, over...

 with a main 4 inch turret and a helicopter landing pad, currently primarily used to fight drug cartels. It is also armed with SA-18 Grouse missiles. Like other ships of this class, it was designed and built in Mexican dockyards, and is sometimes referred to as a compact frigate.
It was named after the Mexican state of Sonora

Sonora

Sonora officially Estado Libre y Soberano de Sonora is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided into 72 municipalities; the capital city is Hermosillo....

Statistics

• Cruising speed: 20 knots (39.2 km/h)
• Length: 81.4m
• Beam: 10.5m
• Draft: 3.90m
• Normal displacement: 1,300 tons