The 22nd Offshore Patrol Squadron comprises of four BARKAT Class Corvettes, commissioned between years 1988-1990. BARKAT Class Corvettes were built at Haungpu Shipyard, China. Since their induction into PMSA fleet, these ships have served extensively in host of Maritime Security operations and have been considered pivotal in combating Drug-Narco trafficking and against illegal poaching at sea. General Characteristics of BARKAT Class Corvettes of PMSA are as follows: