Durango Class
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The ''Durango'' class is an
offshore patrol vessel A patrol boat (also referred to as a patrol craft, patrol ship, or patrol vessel) is a relatively small naval ship, naval vessel generally designed for Coastal defence and fortification, coastal defence, Border control, border security, or law ...
class Class or The Class may refer to: Common uses not otherwise categorized * Class (biology), a taxonomic rank * Class (knowledge representation), a collection of individuals or objects * Class (philosophy), an analytical concept used differentl ...
in service with the
Mexican Navy The Mexican Navy is one of the two independent armed forces of Mexico. The actual naval forces are called the ''Armada de México''. The ''Secretaría de Marina'' (''SEMAR'') (English: Naval Secretariat) includes both the ''Armada'' itself and ...
. The ''Durango'' class, comprising four ships, was designed and constructed in Mexico in 1999–2000. The class entered service in 2000 and is used primarily for drug interdiction and patrol.


Description

The ''Durango''-class design is based on the s but with a different
superstructure A superstructure is an upward extension of an existing structure above a baseline. This term is applied to various kinds of physical structures such as buildings, bridges, or ships. Aboard ships and large boats On water craft, the superstruct ...
. They have a
standard displacement The displacement or displacement tonnage of a ship is its weight. As the term indicates, it is measured indirectly, using Archimedes' principle, by first calculating the volume of water displaced by the ship, then converting that value into wei ...
of and at full load. The vessels measure long with a
beam Beam may refer to: Streams of particles or energy *Light beam, or beam of light, a directional projection of light energy **Laser beam *Particle beam, a stream of charged or neutral particles **Charged particle beam, a spatially localized grou ...
of and a
draft Draft, The Draft, or Draught may refer to: Watercraft dimensions * Draft (hull), the distance from waterline to keel of a vessel * Draft (sail), degree of curvature in a sail * Air draft, distance from waterline to the highest point on a vessel ...
of . The patrol vessels are propelled by two
shafts ''Shafts'' was an English feminist magazine produced by Margaret Sibthorp from 1892 until 1899. Initially published weekly and priced at one penny, its themes included votes for women, women's education, and radical attitudes towards vivisection, ...
powered by two
Caterpillar Caterpillars ( ) are the larval stage of members of the order Lepidoptera (the insect order comprising butterflies and moths). As with most common names, the application of the word is arbitrary, since the larvae of sawflies (suborder Sym ...
3616 V16
diesel engine The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-call ...
s rated at . They have a maximum speed of . For electrical power, the ''Durango'' class are equipped with two 260 kilowatt generators and one 190 kW generator. The patrol vessels are armed with a single Bofors /70 caliber gun Mk 3 mounted forward capable of firing 220 rounds/minute to a range of . The ships mount an Alenia 2 combat data system and
Saab Saab or SAAB may refer to: Brands and enterprises * Saab Group, a Swedish aerospace and defence company, formerly known as SAAB, and later as Saab AB ** Datasaab, a former computer company, started as spin off from Saab AB * Saab Automobile, a fo ...
EOS 450
optronic director A director, also called an auxiliary predictor, is a mechanical or electronic computer that continuously calculates trigonometric firing solutions for use against a moving target, and transmits targeting data to direct the weapon firing crew. Na ...
for fire control. They are equipped with air and surface search
radar Radar is a detection system that uses radio waves to determine the distance (''ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, w ...
. The ''Durango'' class has a complement of 74 including 10 officers with the capability to transport 55 additional personnel. Vessels of the class carry an interceptor craft capable of over . The vessels also mount a
helicopter deck A helicopter deck (or helo deck) is a helicopter pad on the deck of a ship, usually located on the stern and always clear of obstacles that would prove hazardous to a helicopter landing. In the United States Navy, it is commonly and properly ref ...
over the stern and a
hangar A hangar is a building or structure designed to hold aircraft or spacecraft. Hangars are built of metal, wood, or concrete. The word ''hangar'' comes from Middle French ''hanghart'' ("enclosure near a house"), of Germanic origin, from Frankish ...
and are capable of operating one medium helicopter.


Ships


Construction and service

The four ships of the class were ordered as a follow on to the s on 1 June 1998. Their design was derived from the ''Holzinger'' class and are slightly larger than the ''Sierra'' class. ''Durango'' and ''Sonora'' were based at
Guaymas Guaymas () is a city in Guaymas Municipality, in the southwest part of the state of Sonora, in northwestern Mexico. The city is south of the state capital of Hermosillo, and from the U.S. border. The municipality is located on the Gulf of Califo ...
in 2009 and ''Guanajuato'' and ''Veracruz'' at
Coatzacoalcos Coatzacoalcos () is a major port city in the southern part of the Mexican state of Veracruz, mostly on the western side of the Coatzacoalcos River estuary, on the Bay of Campeche, on the southern Gulf of Mexico coast. The city serves as the munic ...
. The ships are primarily used for drug interdiction and patrol. In 2017 ''Durango'' took part in the multi-national
naval exercise A military exercise or war game is the employment of military resources in training for military operations, either exploring the effects of warfare or testing strategies without actual combat. This also serves the purpose of ensuring the comb ...
UNITAS 2017.


Notes


Citations


Sources

* * * {{DEFAULTSORT:Durango Class Patrol Vessel Patrol vessels of the Mexican Navy Patrol ship classes Ships built in Mexico