BNS Nishan
BNS "Nishan" is a "Durjoy"-class semi-stealth large patrol craft of the Bangladesh Navy. She has been serving the Bangladesh Navy since 2017. Career. The ship was launched on 15 March 2017. Honorable President of the Bangladesh, Md. Abdul Hamid commissioned the ship to the Bangladesh Navy on 8 November 2017. On 10 September 2018, fishing trawler "Swadhin-3" sank near Mongla port after a collision with a commercial vessel. 12 fishermen were on board the fishing trawler. BNS Turag responded quickly to rescue 9 fishermen alive. Later BNS "Nishan" joined the operation along with to search for the  other three fishermen. Design. BNS "Nishan" (P815) is of long, wide and have a draught with a displacement of 648 tonnes. The ship has a bulbous bow that suggests it is very stable in heavy sea states. It has speed and range to support long lasting missions. The craft is powered by two SEMT Pielstick 12PA6 diesels driving three screws for a top speed of . The range of the ship is and endurance is 15 days. It has a complement of 70 crews. She was mainly made to be used as Anti-submarine warfare ship. Electronics. The primary sensor of  the ship is a SR47AG surface and air search radar.The ship carries a Chinese TR47C fire control radar for main gun. For navigation, the ship uses the Japanese JMA 3336 radar. To help the navigational radar, the Vision Master chart radar is used. The ship has an ESS-2B bow mounted sonar with an effective range of about for underwater detection. Armament. The ASW LPC uses a Chinese origin single 76.2 mm (3 in) NG 16-1 naval gun as the primary gun. The vessel is also equipped with one CS/AN2 30 mm (1.2 in) single-barrel naval gun  mounted amidships used as the secondary gun. She is armed with two triple 324 mm (13 in) torpedo tubes for ET-52C torpedo.