Yono-class submarine

Class overview
Name	Yono class
Builders	Yukdaeso-ri Naval Shipyards
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; 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, these submarines displace 130 tons, significantly less than North Korea's larger 1,800-ton Romeo-class submarines. As of May 2010, North Korea is reported to operate ten of these submarines. Iran is reported to have at least one Yono submarine and to have copied the design as the Ghadir-class.