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Submarines1991
Coastal submarine
Sang-O-class submarine is a coastal submarine. It was built by Bong Dao Bo Shipyards, Singpo. Reported operators include Korean People's Navy.
North KoreaSang-O-class submarine
Public Affairs, U.S. Forces Korea · Public domain · Resized · Public domain · Source ↗ · ModifiedBong Dao Bo Shipyards, Singpo
Korean People's Navy
Yugo class
Sinpo class
Attack version, infiltration/reconnaissance version
1991
41+
40 (February 2021)
1 captured by South Korea
1
Coastal submarine
275 tons (surfaced) 370 tons (submerged)
34 m (111 ft 7 in)
3.8 m (12 ft 6 in)
Diesel-electric: 1 small diesel, 1 electric motor, 1 shaft
7.5 knots (13.9 km/h; 8.6 mph) surfaced 9 knots (17 km/h; 10 mph) submerged
1,500 nmi (2,800 km; 1,700 mi)
150 m (490 ft), capable of bottoming
0 (10/11 in recce version)
15
Radar Civilian Furuno I-band radar Passive RWR/ESM/SIGINT Golf Ball radar Snoop Plate radar Sonar Trout Cheek sonar
4 × 533 mm (21 in) torpedo tubes fitted with Russian 53-65KE torpedoes Capable of minelaying
Fitted with a snorkel
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Reference text from Wikipedia contributors, used under CC BY-SA 4.0.
True scale
Sourced dimensions beside a 1.75 m human reference.
Points represent sourced observations, including revisions. Revisions on the same effective date are not separate inventory events. Ranges appear in the table and are not plotted as exact points.
| Observation / report period | Value | Source | Claim state |
|---|---|---|---|
| 28 Sept 2026 | 34 m | Wikipedia contributors | superseded |
Sang-O-class submarine equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.
North KoreaReported count for Sang-O-class. Service scope: Korean People's Navy; does not replace a national total. 1 distinct quantity component(s) from the same source list; shared rowspan cells counted once. Explicit source inventory scope: active; no other stock status or total inferred. Count column(s): in service: 40. Origin: unstated. The listed variants/roles are the scope, not an immediately deployable count. The components do not establish one inventory census date; the stored date is the retrieved source snapshot.
Reported count for Sang-O-class. Service scope: Korean People's Navy; does not replace a national total. 1 distinct count cell(s) from the same source list; shared rowspan cells counted once. Excludes retired/reserve/on-order rows. Count column(s): in service: 40. Origin: unstated. The listed variants/roles are the scope, not an immediately deployable count. The components do not establish one inventory census date; the stored date is the retrieved source snapshot.