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Initial Operational Capability (IOC): 2000
Total Production: 8
Also Known As: Holzinger 2000
Origin: Mexico
Parent System: Sierra
Initial Operational Capability (IOC): 2000
Total Production: 8
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Description: The Sierra-class oceanic patrol corvettes are intended mainly for interception of drug smugglers, Exclusive Economic Zone (EEZ) patrol, and countering terrorism. The class comprises eight ships with the lead ship ARM (Armada Republica Mexicana/Navy of the Republic of Mexico) Sierra (PO-141) commissioned by the Mexican Navy in 2000. Originally, this project was designated Holzinger 2000 because it is a further development of Mexican Navy Holzinger-class ships introduced in the early 1990s. These ships represent modern shipbuilding with an aft flight deck and hangar for one MBB BO-105C helicopter, stealth features and one 57mm Mk3 naval gun in the fore deck to engage air and surface targets.

The 57mm Mk3 naval gun with 3P ammunition was accepted for use in the Mexican Navy in April 2003 following sea operational evaluation conducted by ARM Sonora (PO-152) oceanic patrol vessel. The four last ships of the class have received some modifications to improve their overall performance compared with the first four ships of the same class.

Sierra Specifications

Crew: 74
Troops: 16
Beam: 10.2 meter (33.3 foot)
Draft: 9.60 meter (31.5 foot)
Length: 75 meter (247 foot)
Main Gun Caliber: 57 millimeter
Total Combined Power: 12,400 shp (9,250 kW)
Cruise Speed: 9.20 mps (17.9 knot)
Mission Endurance: 18 day (432 hour)
Full Displacement: 1,300 ton
CEP: Circular Error Probable
Meters (m)   Kilometers (km)   Nautic Miles (nm)   Inch (in)   Yard (yd)   Foot (ft)   Millimeter (mm)
Pound (lb)   Kilogram (kg)   kN (KiloNewton)   Ton (t)
Meters per Second (mps)   Kilometers per Hour (kph)   Knot (kt)   Miles per Hour (mph)
Liter (l)   Galon (gl)
Year (yr)   Minutes (min)   Second (sec)
Shaft-Horse-Power (shp)

Operators & Related Equipment


Grand Total 81
Cannons & Gear
57mm Mk3x1
Combat Aircraft
BO 105x1

Sierra Ship Listing

SerialNameStatusLaunch DateCommissionDecommission
PO-141 ARM Sierra-2000-
PO-142 ARM Juarez-2000-
PO-143 ARM Prieto-2001-
PO-144 ARM Romero-2001-
PO-151 ARM Durango---
PO-152 ARM Sonora---
PO-153 ARM Guanajuato---
PO-154 ARM Veracruz---

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