Marine Security Belt

Marine Security Belt, also known with the portmanteau CHIRU, is a trilateral naval exercise involving China, Iran and Russia as partners. First held in 2019, it is set to be taken place annually.

2019
The first edition of the exercise began on 27 December 2019 and took four days. The area of operation was the northern part of the Indian Ocean.

The units participating in the exercise included:


 * 🇮🇷 Iran
 * Alborz (frigate)
 * Sahand (frigate)
 * Bayandor (corvette)
 * Tondar (hovercraft)
 * Shahid Naserinejad (auxiliary ship)
 * Shahid Nazeri (HARTH)

 2020 
 * 🇨🇳 China
 * Xining (destroyer)
 * 🇷🇺 Russia
 * Yaroslav Mudry (frigate)
 * Elnya (tanker)
 * Viktor Konetsky (tugboat)

It was canceled due to the epidemic of the Covid-19 virus

2021
China was absent in the second version of the exercise when it was started by Russia and Iran on 16 February 2021. It was later announced that the Indian and Chinese navies will also join, but neither eventually take part. On 18 February 2021, the official website of the Indian Navy issued a statement denying participation in the drill. Turkish state-run Anadolu Agency reported that the Indian Navy had cancelled the plan at the last minute, because Tehran said China could join the exercise too and Indians did not want to be together with the Chinese due to recent border skirmishes.

The units participating in the exercise included:


 * 🇮🇷 Iran
 * Jamaran (frigate)
 * Naghdi (corvette)
 * Falakhon (fast attack craft)
 * Shahid Nazeri (HARTH)


 * 🇷🇺 Russia
 * Stoikiy (corvette)
 * Kola (replenishment ship)
 * Yakov Grebelsky (tugboat)

2022
The third version of the exercise was held in late January 2022 over an area of 17,000 square kilometres (6,560 square miles) in the northern Indian Ocean. It included a range of tactical exercises like putting out fires on burning vessels, releasing a hijacked vessel, and shooting at air targets at night.

The units participating in the exercise included:


 * 🇮🇷 Iran
 * Dena (frigate)
 * Jamaran (frigate)
 * Naghdi (corvette)
 * Tabarzin (fast attack craft)
 * Zereh (fast attack craft)
 * Bahregan (auxiliary ship)
 * Ganaveh (auxiliary ship)
 * Shahid Nazeri (HARTH)

 2023 
 * 🇨🇳 China
 * Ürümqi (destroyer)
 * 🇷🇺 Russia
 * Varyag (cruiser)
 * Admiral Tributs (destroyer)
 * Boris Butoma (replenishment ship)

The fourth edition of the exercise was held from March 15 for 4 days in the northern Indian Ocean.

The units participating in the exercise included:


 * 🇮🇷 Iran
 * Jamaran (frigate)
 * Sahand (frigate)
 * Bayandor (corvette)
 * Zereh (fast attack craft)
 * Sirjan (auxiliary ship)
 * Delvar (auxiliary ship)
 * Nayband (auxiliary ship)
 * Bahregan (auxiliary ship)
 * Shahid Mahmoudi (auxiliary ship)
 * Shahid Nazeri (HARTH)


 * 🇨🇳 China
 * Nanning (destroyer)
 * 🇷🇺 Russia
 * Admiral Gorshkov (frigate)
 * Kama (tanker)