Yono-class submarine

Class overview
Name	Yono class
Builders	Yukdaeso-ri Naval Shipyards[1]
Operators	Korean People's Navy
Preceded by	Yugo class
In service	1965–present
In commission	10
Building	36
Completed	36
Active	<36 (most in reserve)
General characteristics
Type	Midget submarine
Displacement	120 tons submerged[2] 76–95 tons surfaced
Length	20–22 m (65 ft 7 in – 72 ft 2 in)
Beam	2.75 m (9 ft 0 in)
Draught	1.6 m (5 ft 3 in)
Propulsion	Single-shaft MTU diesel engine with electric drive
Speed	10–11 knots (19–20 km/h; 12–13 mph) surfaced 4–8 knots (7.4–14.8 km/h; 4.6–9.2 mph) submerged
Range	550 nmi (1,020 km; 630 mi) surfaced 50 nmi (93 km; 58 mi) submerged
Complement	2 + 6 or 7 special forces personnel
Armament	2 × 533 mm (21 in) torpedo tubes Mines

The Yono-class submarine (occasionally confused with Yugo-class) is a class of North Korean miniature submarines, produced for domestic use as well as for export. Also referred to as the Yeono class,^[3] these submarines displace 130 tons, significantly less than North Korea's larger 1,800-ton Romeo-class submarines.^[4] As of May 2010, North Korea is reported to operate ten of these submarines.^[4] Iran is reported to have at least one Yono submarine and to have copied the design as the Ghadir-class.^[5]