Yono-class submarine
Ship class
The Yono-class submarine 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... Wikipedia
Armament: 2 × 533 mm (21 in) torpedo tubes; Mines
Length: 20–22 m (65 ft 7 in – 72 ft 2 in)
Range: 550 nmi (1,020 km; 630 mi) surfaced; 50 nmi (93 km; 58 mi) submerged