Editing Walrus-class submarine (section)

==Operational history==
[[File:Onderzeeboot Hr.Ms. Zeeleeuw (1990-). Boven water varend (2158 042290).jpg|thumb|right|Aerial view of ''Zeeleeuw'']]
After the Cold War, the submarines have been tasked with many highly confidential intelligence gathering operations, many of which are still classified.<ref>{{cite magazine |last=Koenen |first=Sander |date=September 2009 |title=Kopje Onder  |url=https://www.klaarvooronderwater.nl/kvo/Kvo-109.pdf |magazine=Klaar Voor Onderwater |location=Den Helder |publisher=Onderzeedienst Reünistenvereniging |issue=109|volume=32 |pages=3-9 |language=Dutch}}</ref> They have operated in the Northern Atlantic, Mediterranean Yugoslavian region, the Persian Gulf at Iran and Iraq, and the [[Caribbean]], often upon the request of allies, including the United States.<ref name="deblesbovenhomburg">de Bles, Boven and Homburg (2006), pp. 104–105</ref>

In June 2010, the Netherlands agreed to deploy one submarine to help combat [[piracy off the coast of Somalia]].<ref>{{cite news|title=Nederlandse Onderzeeboot tegen piraten|url=https://www.parool.nl/nieuws/nederlandse-onderzeeboot-tegen-piraten~b57ed492|date=2010-06-22}}</ref>

In November 2016, the [[Russian Navy]] claimed to have chased off a ''Walrus''-class vessel from a battle group that included the {{ship|Russian aircraft carrier|Admiral Kuznetsov|4=2}}.<ref>{{cite news|title=Russia ships 'chase away' Dutch submarine in Mediterranean|url=https://www.bbc.co.uk/news/world-europe-37928222|publisher=BBC|access-date=10 November 2016|date=2016-11-09}}</ref>

===Submarine command course===
[[File:Onderzeeboot Hr.Ms. Zeeleeuw (S803) interieur, machinekamer (2158 017256).jpg|thumb|left|Engine room aboard ''Zeeleeuw'']]
The ''Walrus''-class submarines are used for the [[Submarine Command Course]] (SMCC) for both national and international candidates (including the UK, Australia and Canada), selecting and training future commanders of conventional submarines. They are highly rated, with an exceptional reputation.<ref>de Bles, Boven and Homburg (2006), p. 105</ref> The Royal Netherlands Navy began this course after the British [[Royal Navy]] phased out their conventional submarines.