Naval exercise SITMEX 2021 between Thailand, Singapore and India

According to information published by the Indian Ministry of Defense on November 15, 2021, Indian Naval Ship (INS) Karmuk, an indigenously built Missile Corvette is participating in the 3rd edition of India, Singapore, and Thailand Trilateral Maritime Exercise SITMEX – 21, from 15 to 16 Nov 21 in the Andaman Sea.
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Russian Vyborg Shipyard laid the Purga ice class coastguard ship of project 23550 925 001 Singapore Navy's Formidable-class RSS Tenacious (Picture source: Indian Ministry of Defense)

Republic of Singapore Navy (RSN) is being represented by RSS Tenacious, a Formidable Class Frigate and Royal Thai Navy (RTN) by His Majesty’s Thailand Ship (HTMS) Thayanchon, a Khamrosin Class Anti-submarine Patrol Craft.

SITMEX is being conducted annually since 2019 with an aim to enhance mutual inter-operability and imbibing best practices between the Indian Navy (IN), RSN and RTN.

The maiden edition of SITMEX was hosted by IN off Port Blair in September 2019. RSN hosted the second edition of the exercise in November 2020. The 2021 edition of the exercise is being hosted by RTN in the Andaman Sea.

The Khamronsin-class corvettes are three corvettes constructed for the Royal Thai Navy in the late 1980s. Based on a British design, all three ships were built in Thailand.

A fourth vessel, constructed to a modified design, was built for the Thai Police and was the first to enter service in 1992. The three Khamrosin-class corvettes were commissioned in 1992 and remain in service.

The corvettes measure 62 meters (203 ft 5 in) long overall and 56.4 m (185 ft 0 in) at the waterline with a beam of 8.2 m (26 ft 11 in) and a draught of 2.5 m (8 ft 2 in).