IRIS Yunes (903)

Iran and Russia signed a contract for submarines in 1988.[1] It was reportedly worth $750 million for two submarines (Taregh and Nooh), with an option for the third (Younes).[4]

Her keel was laid down at Admiralty Shipyard in Saint Petersburg in 1990.[1] She was launched in 1993 and was commissioned on 25 November 1996.[1] Jane's Defence Weekly reported on 8 October 1994 that Iran was considering cancellation of Younes, due what was later revealed to be continued problems with batteries of the first two received submarines of the same class.[5]

The submarine is named after Jonah.[6]

According to Jane's, Younes did not appear in Indian Naval Review in February 2001, probably because of a mechanical problem.[1]

In July 2011, Younes returned from its first mission in high seas, ending a 66-day deployment since April in the Gulf of Aden and the Red Sea.[7] An Iranian naval official said the submarine tested upgraded systems during the mission, identifying and intercepting surface vessels and subsurface float of different countries within area.[7] It also accompanied 14th Flotilla fighting Piracy off the coast of Somalia in July.[8]

On 20 November 2013, Younes left home on a mission to East Asia.[3] Welcomed by local officials, it docked at Mumbai, India on 5 December.[9] The submarine arrived at Colombo, Sri Lanka on 22 December[10] and was visited by Admiral Jayanath Colombage before it left the port.[11]

• List of ship launches in 1993
• List of ship commissionings in 1996
• List of current ships of the Islamic Republic of Iran Navy

• Saunders, Stephen, ed. (2004–2005), Jane's Fighting Ships, Jane's Information Group, ISBN 978-0710626233
• Saunders, Stephen, ed. (2009–2010), Jane's Fighting Ships, Jane's Information Group, ISBN 978-0710628886