page_title: Type 214 submarine
section_title: Portugal
hierarchical_section_title: Type 214 submarine / Operators / Portugal
caption_attribution_description: Português: Chegada do submarino NRP Tridente à Base Naval do Alfeite. English: Submarine NRP Trident on it´s arrival to Alfeite naval base. Deutsch: Das U-Boot NRP Tridente bei der Ankunft im Marinestützpunkt Alfeite.
context_page_description: The Type 214 is a diesel-electric submarine developed by Howaldtswerke-Deutsche Werft GmbH. It features diesel propulsion with an air-independent propulsion system using Siemens polymer electrolyte membrane hydrogen fuel cells. The Type 214 submarine is derived from the Type 212, but as an export variant it lacks some of the classified technologies of its smaller predecessor, the most important of which is probably the non-magnetic steel hull, which makes the Type 212 submarine difficult to detect using a magnetic anomaly detector.
  Due to improvements in the pressure hull materials, the Type 214 can dive nearly 400 meters. It can also carry food, fresh water and fuel for 84 days of operation.
  The Republic of Korea Navy has ordered nine Type 214 submarines, designated as Son Won-Il-class, to be built in Korea by Hyundai Heavy Industries and Daewoo Shipbuilding & Marine Engineering; three first batch models had entered service since 2007, and six second batch models will enter service from 2012.
  A contract to build four boats for the Hellenic Navy was signed 15 February 2000 and a fourth unit was ordered in June 2002.
context_section_description: In 2005 Portugal awarded a contract to Howaldtswerke-Deutsche Werft for two Type 214 submarines, which were delivered in 2010.
caption: NRP Tridente (S161) in 2010
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