Patrulleros de Zona Marítima

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ARC 20 de Julio
Class overview
Builders:  Chile : ASMAR
 Colombia : COTECMAR
Operators:  Chilean Navy
 Colombian Navy
Building: 1
Planned: 5 + 6
Completed: 3 Chile
2 Colombia
Active: 5
General characteristics
Type: Offshore Patrol Vessel
Displacement: 1728 tons - 1850 tons
Length: 80.6 meters
Beam: 13 meters
Draught: 3.8 meters
Draft: 16.5 meters

2 x Wärtsilä[1] 12V26 – output of 4080 kW each at 1000 rpm
CPP 4D775 with Lipstronic Advanced 7000 control system
Wärtsilä reduction gearbox SCV 62
3 x Caterpillar 3412C 435 kVA at 1500 rpm
1 x Caterpillar 3056 105 kVA at 1500 rpm
2 x type MD stern shaft seals

2 x bow thrusters, 200 kW

Maximum: 22 knots

Economy: 12 knots
Range: At economy speed of 12 knots: 8600 Nm
Complement: 30, up to 60
Sensors and
processing systems:

Fire Control System: DESA ARIES[2]
Navigation: Sperry Marine VisionMaster FT Integrated Bridge System (IBS) [3]
Radars: 2 x Sperry Marine BridgeMaster E X-band radars

1 x Sperry Marine BridgeMaster E S-band radar

Guns: 40 mm/70 medium-calibre (A position)

2 x 12.7mm (B position)
Aircraft carried: Chile: 1 x AS.365 Dauphin N2
Colombia: 1 x Bo 105
Aviation facilities: hangar for a medium size helicopter

The Patrulleros de Zona Marítima (PZM) (English: Maritime Zone Patrol Boats) are a series of offshore patrol vessels being built for the Navies of Chile and Colombia.

Argentina also expressed an interest in building these ships.


The design of the PZM was developed by Fassmer GmbH & Co. KG, a Germany company to meet the Chilean Navy's requirements under the Danubio IV project. The contract for ASMAR to build the PZMs was signed on May 20, 2005, with Northrop Grumman, Sisdef (a consortium of BAE Systems and shipbuilder ASMAR) and Rohde & Schwarz participating as main subcontractors at a cost of US$54 million to be commissioned by 2012. The vessels will be operated by the Coast Guard Service of the Chilean Navy and they will conduct patrol missions in Chile’s Exclusive Economic Zone (EEZ). The design of the Proyecto Patrulleros de Zona Marítima is being promoted by Chile as a common platform for South American Navies through the Proyecto Patrullero de Alta Mar Regional ( or Regional Offshore Patrol Ship) committee.


On 2008, Argentina ordered up to five PZM[4] at a cost of US$120 million as part of its own Patrulleros de Alta Mar (PAM) programme to be constructed at its Río Santiago Shipyard. Finally on 2010 the Argentine Government launched the construction of the first four in the Tandanor Shipyard.[5] As of 2014 this has not begun, it's presumed the project was shelved.[citation needed]


Colombia has ordered three vessels[6] to be built at its COTECMAR shipyard in Cartagena, out of 6 planned until 2020.

Ships in Class[edit]

Name Pennant Laid Down Launched Commissioned Country
Piloto Pardo 81 17-Jun-2007 13-Jun-2008  Chile
Comandante Policarpo Toro 82 15-October-2008 30-July-2009  Chile
ARC 20 de Julio 46 24-Jul-2010 20-Jul-2012[7]  Colombia
ARC 7 de Agosto 47 14-Apr-2012[8] 04-Sep-2013[9] 18-Mar-2014[10]  Colombia
Marinero Fuentealba 83 13-Jul-2012[11] 03-Apr-2014[12] August 2014  Chile


External links[edit]