|Country of origin:||North Korea|
|Displacement:||330 – 370 tons|
|Max Speed:||9.2 mph (8 knots)|
|Length:||111.5 ft (34 m)|
|Beam:||12.5 ft (3.8 m)|
|Dive Depth||492.1 ft (150 m)|
|Range:||1,726.2 miles (2,778 km / 1,500 nm)|
|Crew:||21 + as many as 5 commandos|
|Armament:||2 x 533mm torpedo tubes|
|Sonar/Sensors:||Non-indigenous commercial systems|
|Notes:||May come in two versions: one armed with torpedoes to perform conventional attacks, and another (also known as the K-300 class) to perform reconnaissance missions and insert special operations personnel onto hostile shores.|
|A Sang-O submarine was captured in September 1996 after running aground near Gangneung, South Korea as it attempted to retrieve three North Korean special operations commandos. The incident lead to a 53-day manhunt, that resulted in 24 of the submarine’s crew killed, one captured, and another believed to have escaped across the DMZ.|
- Joseph S. Bermudez Jr and Karl Dewey, “North Korea modernises submarine fleet,” IHS Jane’s Intelligence Review, 2016.
- “Sang-O (class) Diesel-Electric Attack Submarine / Coastal Patrol Submarine (1991),” Military Factory, February 11, 2016.
- Brandon K. Gauthier, “This Day in the History of the DPRK: Submarine Invasion,” NK News, September 18, 2012.
- Joseph S. Bermudez Jr, “The North Korean Navy Acquires a New Submarine,” 38 North, October 19, 2014.