They replace older coastal patrol craft and some of the Type H frigates. The first Type entered service in March , and 22 ships were built for active service. Following construction of Aba the 50th Type A in December , China ceased building Type A corvettes it had earlier ceased building the original Type model to focus on procuring bigger bluewater warships for high sea missions. The Type hull may have been based on the Pattani -class offshore patrol vessels , which were built in China for Thailand from to The first ship was launched by Hudong-Zhonghua Shipbuilding in May The Type A were in production by late The Type corvette fills the capability gap between the Type missile boat and the Type A frigate.
Surface armament is reported as an AK millimetre 3. It is likely that the Chinese will have undertaken extensive trials and analysis of any imported equipment and built a nominally indigenous system using the knowledge gained.
The Type has a helicopter deck for landing a Z-9 -sized helicopter, but no hangar. The Bangladesh Navy operates four of the C13B [ 25 ] corvette variant, called Shadhinota -class in service. The forward superstructure was moved back to make for a raised structure ahead of the bridge. Large davits were installed ahead of the flight deck on both sides of the ships. It is not expected to be armed with the 76 mm.
Between mid and January , China also transferred all 22 of the original Type variant to the China Coast Guard. Armament is reportedly a single NG 76 mm gun with a TR47 fire-control radar, two 30 mm guns, and two 20 mm 0. Both were built at the Wuchang Shipyard. China has donated two Type 56 corvettes which are under construction.
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