|Builder:||Hudong Shipyard, Shanghai|
|Launched:||July 14, 1987|
|Commissioned:||November 4, 1989|
|Identification:||Pennant number: F-18|
|Status:||in active service|
|Class and type:||Modified Type 053H frigate|
|Length:||103.2 m (339 ft)|
|Beam:||10.7 m (35 ft)|
|Range:||2,700 nmi (5,000 km; 3,100 mi) at 18 knots (33 km/h; 21 mph)|
|Complement:||300 (27 officers)|
|Watchdog; Radar warning|
The Type 053H1 Frigate Osman was previously known as Xiangtan, which served with People's Liberation Army Navy (PLAN) in South Sea Fleet. It was commissioned in PLAN in December 20, 1987. In PLAN service, this ship participated in Johnson South Reef Skirmish against the Vietnamese navy in March 14, 1988 and sunk the Vietnamese transporter ship HQ-605. In 1989 the ship was sold to Bangladesh Navy. She was commissioned in Bangladesh Navy as Osman on November 4, 1989. She is the first guided missile frigate to enter in service with Bangladesh Navy.
Osman is based in Chittagong, serving with the Commodore Commanding BN Flotilla (COMBAN). About 250 personnel serve aboard Osman, with most living on board. She is the first frigate of Bangladesh Navy who test fired C-802A missile in Bay of Bengal On May 12, 2008 which successfully hit the target. The ship has gone through major upgrades which includes replacement of propulsion system, new missile launching platforms and an addition of a combat data link.
Osman was deployed in Lebanon with the UN mission United Nations Interim Force in Lebanon (UNIFIL) from 17 May 2010 to 14 June 2014. She came back to Bangladesh on 11 August 2014. On her way, she visited the Port of Salalah and Port Sultan Qaboos of Oman, Port of Colombo of Sri Lanka and Mumbai and Chennai Port of India on goodwill mission.
On 11 October 2014, Osman was awarded the title of National Standard in recognition of the ship's quarter century of outstanding service in the Bangladesh Navy at home and abroad.
Powered by two 8,000 hp type 12 E 390V diesel engines that drive two propellers, Osman has a maximum speed of 26 knots (48 km/h; 30 mph). She has a range of 2,700 nautical miles (5,000 km; 3,100 mi) at 18 knots (33 km/h; 21 mph).
The ship's primary armament consists of eight C-802 anti-ship missiles. Her secondary armament consists of two twin 100 mm guns, mounted on the bow and stern. Anti-aircraft armament consists of four AK-230 twin 37 mm guns. For anti-submarine warfare, she is equipped with two RBU-1200 anti-submarine rocket launchers and two BMB-2 depth charge mortars. She can carry up to 60 mines.
- List of active ships of the Bangladesh Navy
- BNS Umar Farooq
- BNS Abu Bakar
- BNS Ali Haider
- BNS Bangabandhu
- "Jianghu Class Guided Missile Frigate". Retrieved December 13, 2009.
- Minnick, Wendell (May 14, 2009). "Bangladesh Navy Tests Chinese Anti-Ship Missile". Defense News. Army Times. Retrieved December 13, 2009.
- "Bangladesh navy begins operation in Lebanon". The Daily Star. BSS. 18 May 2010.
- "Oman, Bangladesh Discuss Naval Ties". 9 July 2014.
- "BNS Osman gets 'National Standard' award". banglanews24.com. 11 October 2014. Archived from the original on 12 October 2014.
- Saunders, Stephen (2013). Jane's Fighting Ships 2013–2014. Coulsdon, Surrey, UK: Jane's. p. 52. ISBN 978-0-7106-3048-3.