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SubmarinesLate 1960sProfile in progress
Midget submarine
Yugo-class submarine is a midget submarine. It was built by Yukdaeso-ri shipyard. Reported operators include North Korea, Vietnam, Cuba.
North KoreaTechnical data
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 |
|---|---|---|---|
| 29 Sept 2026 | 20 m | Wikipedia contributors | superseded |
| 29 Sept 2026 | 20 m | Wikipedia contributors | superseded |
| 29 Sept 2026 | 20 m | Wikipedia contributors | approved |
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Yugo class
Yukdaeso-ri shipyard
See Operators
Sang-O class
Late 1960s
8
4
3
1
Midget submarine
90 up to 110 tons (submerged)
20 m (65 ft 7 in)
2 m (6 ft 7 in)
Single-shaft MTU diesel engine
10 knots (19 km/h; 12 mph) surfaced 4 knots (7.4 km/h; 4.6 mph) submerged
4–6 special forces troops
Some armed with two 533 mm (21 in) torpedoes , possibly in drop collars .
First successful indigenous midget submarine
North Korea
Vietnam
Cuba
Yugo Midget submarine 41,42 2 North Korea Delivered in 1997 and assigned to 196th Regiment when delivered. Used for training as of 2020.
Reference text from Wikipedia contributors, used under CC BY-SA 4.0.
Yugo-class submarine equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.
Cuba North Korea
VietnamNavy exact named equipment holdings of Yugo (DPRK). Active, operational-reserve and training units excluding equipment in store; November 2025 IISS assessment. Named service only, not a national or parent-force total or combat-readiness measure. Source role(s): SUBMARINES / SSW. No heading aggregate, carried armament, crew, payload, factory production or future order count inherited. The leading printed inventory count is retained; separately stated extra reserve, nonoperational or repair quantities inside parentheses are not added to it and remain verbatim in the excerpt. Source parentheses retain employment, lease, reporting designation, alternate model, or included-subset scopes exactly. Own fetched primary and alternate/model identity declarations are retained. Numbers inside an included subset are part of the printed count and are never added again; no sibling or parent specification is copied.