Shadhinota-class corvette (Type C13B)

The Type C13B light frigates ordered by the Bangladesh Navy in 2013. The ships improved on the basis of Type 056. It replaced the weapon and radar system different from the domestic version and cancelled the anti-submarine capability. The most advanced frigate in the media, once known as China's export, its shape has been fully integrated with the overall trend of international light frigates.

The C13B corvette is the surface warfare corvette variant of the Type 056 corvette for the Bangladesh Navy. The corvettes displace 1,330 tons and are 90 metres (300 ft) in length. It is armed with a H/PJ-26 76 mm gun, C-802A anti-ship missiles, FL-3000N SAMs and two H/PJ-17 30mm remote controlled gun turrets. The C13B lacks sonar and ASW weapons. Like the Type 056, there is a helicopter pad but no hangar. The corvette has a reported speed of 25 knots (46 km/h).

The first batch of two corvettes was ordered from Wuchang Shipyard in Wuhan, reportedly in October 2012. The ships were laid down on 8 January 2013. Shadhinota (F111), the lead ship, was launched on 30 November 2014. The second ship, Prottoy (F112) was launched on 30 December 2014. Shadhinota and Prottoy were commissioned on 19 March 2016.

The second batch of two corvettes was ordered on 21 July 2015 to China. Construction of the ships began on 9 August 2016. The third ship of the class, Shongram (F113), was launched on 12 February 2018. The fourth ship of the class, Prottasha (F114) was launched on 8 April 2018. The Bangladesh Navy has received the final two Shongram and Prottasha corvettes. The corvettes were handed over to the service on 28 March and arrived at the naval base in Chittagong on 27 April 2019.