Modified Ol-class fleet replenishment oiler of the Islamic Republic of Iran Navy
IRIS "Kharg" () was a modified fleet replenishment oiler of the Islamic Republic of Iran Navy, named after Kharg Island.
Built by Swan Hunter in the United Kingdom and launched in 1977, "Kharg" was delivered to Iran in 1984. She was its largest naval vessel based on tonnage until the commissioning of in early 2021.
On 2 June 2021, "Kharg" caught fire and sank in the Gulf of Oman near the Iranian town of Jask, some from the Strait of Hormuz.
Design.
According to the "Combat Fleets of the World", the ship was "greatly modified" in comparison to its Ol-class sister ships in service of the British Royal Fleet Auxiliary. The ship's design was described by "Jane's Fighting Ships" as "incorporating some of the features" of the class, and fitted to carry dry stores and ammunition in addition to fuel.
"Kharg" displaced of standard load and up to at full load. It had a gross tonnage of 18,880 and a deadweight tonnage of . According to "Jane's" the vessel was long, had a beam of and a draft of . The "Combat Fleets of the World" records the dimensions slightly differently, with , and for length, beam and draft respectively.
Its original installed machinery included a pair of two-drum boilers built by Babcock &amp; Wilcox, that rotated two Westinghouse geared turbine sets. The system was designed to generate 7,000 kW of electricity, and to provide for her single shaft coupled with the propeller. The ship was capable of reaching a nominal top speed of .
Its original navigation radar was manufactured by Decca Radar, a Decca 1229 model working on I-band, while the installed tactical air navigation system was a U.S.-made URN 20. It was also fitted with Inmarsat.
It was armed with an OTO Melara /62 compact gun on its forecastle, as it was designed. The planned armament included two Bofors AA guns, one on the helicopter deck and the other on the forecastle pedestal, that were never installed. It was equipped with four Soviet /80 anti-aircraft autocannons arranged in two twin mounts, as well as two heavy machine guns.
Its crew consisted of 248 officers and men. "Kharg" had a helipad with twin hangars, giving it sufficient capacity to embark three helicopters.
Operational capabilities.
The International Institute of Strategic Studies (IISS) classified "Kharg" as an AORH, i.e. fleet replenishment oiler with replenishment at sea (RAS) capability and hangar. Only two other Iranian vessels are capable of conducting RAS operations, the and the long "Makran", which was commissioned in 2021.
An assessment published by Stratfor in 2014, mentions that "Kharg" was an essential long-distance blue-water asset for the IRIN because of its ability to extend the range of Iranian warships, adding that "without this vessel, the small number of Iranian frigates would be unable to embark on extended deployments without consistent and frequent port visits along the way".
Eric H. Arnett, a project leader at Stockholm International Peace Research Institute (SIPRI), commented that "Kharg" could provide extra operational flexibility for the Iranian fleet and its capacity to carry large and heavy helicopters like the Sikorsky SH-3 Sea King could improve the anti-submarine warfare abilities of the naval group it belonged to.
Christopher Harmer of the Institute for the Study of War found the ship's ability to lift heavy cargo of particular interest. He argued that in view of the sanctions against Iran, "Kharg" was potentially ideal for safe transfer of valuable or politically sensitive assets, such as imported military equipment, gold or currency. In such a scenario, "Kharg" would have been the vessel supported by the warship it accompanied (an escort), rather than vice versa. According to Harmer, the fact that it was a naval vessel would deter foreign navies from an attempt to prevent its operations. After "Kharg"'s 2011 visit to Syria via the Suez Canal, U.S. Navy officer Joshua C. Himes opined that "the "Kharg" will raise suspicion simply due to its logistics capacity and potential to transport weapons/materiel to Iranian surrogates in the region".
Construction and commissioning.
Iran ordered the ship from the English shipyard Swan Hunter in October 1974 in a contract worth £40 million (equivalent to $54 million).
"Kharg" was laid down on 27 January 1976, launched on 3 February 1977 by Gholam Reza Pahlavi and named by Manijeh Pahlavi, a member of the royal family. R. J. Daniel, a Royal Corps of Naval Constructors officer, wrote in his memoirs that the ceremonial ship launching was attended by the wife of the Shah's brother, and a cleric wearing a black turban blessed the battle honors but got the name of the ship wrong in his first attempt. It ran some trials in November 1978, but delays in fitting-out postponed its commissioning by the Imperial Iranian Navy and shortly afterward the Iranian Revolution took place. In August 1979, it was reported that the Interim Government of Iran intended to cancel the contract, and as a result Swan Hunter was looking for a new purchaser.
It was painted in battleship grey and between September 1979 and February 1980, the "Kharg" undertook sea trials in secrecy. Though it was delivered to the Iranian government on 25 April 1980, the British government refused to issue an export license for the ship. This resulted in "Kharg"'s some 200 crew members being unable to leave the United Kingdom. Swan Hunter declared that it was uninvolved in any political implications and considered building "Kharg" a "straightforward commercial contract". "The Guardian" noted similarities between the complications over the delivery of the "Kharg" and the seizure of the battleship" Reşad V", which was ordered by the Ottoman Navy from Vickers before the First World War; upon the outbreak of war, the British government seized the battleship and incorporated it into the Royal Navy.
The Iranian government initiated negotiations to secure the export license, with the British government informing the Iranians that as long as the Iranian government refused to release their American hostages, "Kharg" would not be issued with an export license. After the hostages were returned to the United States, the export license remained unissued and in August 1981 the Foreign Office declared that the ship would not be issued an export license for the foreseeable future, citing the detention of a British national in Iran, Andrew Pyke, as the reason. Pyke was released in February 1982 and in July the Iranian government sent three high-ranking officers to inspect the "Kharg". On 10 July 1984, "Kharg" arrived at Tyne Shiprepairers for overhaul and it started sea trials on 4 September. "Kharg" left the dock for Iran on 5 October 1984, after the British government approved its export without any armaments on the grounds that it was "not suitable for use in the war against Iraq".
Service history.
1980–1999.
Though completed in 1980, "Kharg" was not present for more than half of the Iran–Iraq War. It was added to the order of battle in 1984 and served almost three years in the war, supporting Iranian warships by refuelling, and carrying ammunition and supplies. In August 1987, "Kharg" led a fleet of six vessels, including and aided by two Sikorsky CH-53 Sea Stallion helicopters, to conduct a minesweeping operation in the Sea of Oman. The area of operation extended east of the Fujairah to the Khor Fakkan. Reports indicated that during the operation, American and French warships were nearby and exchanged radio communications with Iranians for identification without any further contact. When US forces carried out Operation Praying Mantis in April 1988, the ship was stationed at its home port of Bandar Abbas Naval Base.
"Kharg" was refitted in 1994.
It visited Jeddah on 7 March 1998, marking the first port call of an Iranian naval ship to Saudi Arabia since 1979.
2000–2021.
On 31 August 2009, "Kharg", along with the frigate , formed the 3rd naval group and left home for an anti-piracy mission in the Arabian Sea and the Gulf of Aden that lasted 73 days until 17 November 2009. During its next, similar mission it sailed about to support the same warship as part of the 7th naval group for 92 days, from 17 March to 17 June 2010. Later that year, "Kharg" supported in another Aden anti-piracy mission from 28 August to 15 November 2010.
"Kharg" entered the Suez Canal on 22 February 2011, with the frigate "Alvand", on a deployment reported to be a training mission to Latakia, Syria. While docked at Latakia, a new cooperation agreement between Iran and Syria was signed aboard "Kharg". The two ships, which comprised the 12th naval group, were on a mission from 27 January until they returned home on 21 March 2011, and in the Red Sea they saved a Hong Kong merchant vessel from Somali pirates.
It entered the Suez Canal again on 18 February 2012, after briefly docking at Jeddah, Saudi Arabia. It was sent along with the corvette of the 18th naval group on a combined mission involving anti-piracy, training and intelligence collecting activities, lasting for 64 days from 22 January to 26 March 2012. During this mission, it sailed some as far as the Mediterranean Sea and the personnel performed the Hajj. The two ships were together as the 22nd naval group, deployed for anti-piracy measures in the Red Sea between 1 September and 14 November 2012. They docked briefly at Port Sudan, which was described as an "unprecedented visit". The two also engaged Somali pirates during the mission and released two hijacked merchant vessels in April, including the Bolivian-flagged bulk carrier "Eglantine" (whose deck was cleared by commandos), as well as the Panamanian-flagged cargo ship . The mission was reportedly "closely monitored by Western and Israeli militaries".
As the very first IRIN vessels to enter the Pacific Ocean, "Kharg" and the frigate "Sabalan" were named the 24th naval group and made a journey to Jinjiang, China. The two ships made a port call at Colombo, Sri Lanka, en route. The voyage started on 22 January and lasted 72 days until 4 April 2013. The mission was described as the "longest range deployment in Iranian naval history".
On 19 August 2013, it along with "Sabalan" comprised the 27th naval group and undertook another anti-piracy and intelligence operation near Bab-el-Mandeb. It was replaced by the landing ship in the middle of that mission.
It was teamed up again with "Sabalan" as the 29th naval group, departing for a scheduled three-month cruise to the Atlantic Ocean, starting on 21 January 2014. In mid-April, the plan was called off and the two were ordered to return.
Bellingcat reported that satellite imagery showed "Kharg" being moved to a floating drydock in August 2015, having been berthed at the ISOICO shipyard, Bostanu, since November 2014. It left the floating drydock in January 2016. During its time in drydock, it underwent a major refit that included an overhaul of its boiler, the replacement of its steam turbines, and replacing and upgrading its navigation systems. Iranian officials said that the new systems were built domestically.
Its first post-refit deployment was to the Bab-el-Mandeb in June 2018, supporting "Sabalan" and "Naghdi" of the 54th and 55th naval groups respectively. It returned home on 21 August 2018.
On 8 December 2018, "Kharg" was teamed up again with the frigate "Alvand" as the 59th naval group and departed for an intelligence collection and escort operation in the Gulf of Aden. The two navigated in total, and their mission concluded on 20 January 2019.
"Kharg" was tasked to support the newly-commissioned in its first oceangoing mission, including tanker escort and maritime patrol in the Gulf of Aden and the Red Sea. The voyage of the 63rd naval group lasted 100 days from 26 August to 29 October 2019.
It departed home on 30 January 2020, as the ship supporting the corvette in a voyage to cross the Strait of Malacca. The 66th naval group anchored at the Port of Tanjung Priok, Jakarta, between 25 and 28 February to commemorate the 70th anniversary of Indonesia–Iran relations. The mission was partly for training purposes and "Kharg" carried hundreds of cadets from the naval academy.
Sinking.
As of 2:25 a.m. on 2 June 2021, "Kharg" was on fire and sank near Jask in the Gulf of Oman at approximately 8:30 a.m. All 400 crew were rescued, with 33 reported injured. The ship was reported to have been several days into a training mission. 
The ship sank in a region of sensitive waterways around the Strait of Hormuz through which about