Najin class frigate

1993 aerial port side view of a North Korean Navy Najin class frigate underway.
Class overview
Builders:	Unknown, but built in North Korea[1]
Operators:	Korean People's Navy
Built:	1971-1979[1]
In commission:	1973-present
Completed:	4+[1]
Active:	2+
Retired:	2+
General characteristics
Type:	Frigate
Displacement:	1,600 long tons (1,600 t)[1]
Length:	328 ft (100.0 m)[1]
Beam:	32.8 ft (10.00 m)[1]
Draught:	8.9 ft (2.7 m)[1]
Propulsion:	2x diesels; 15,000 bhp; 2 shafts[1]
Speed:	26 knots (30 mph; 48 km/h)[1]
Range:	4,000 nmi (4,600 mi; 7,400 km) at 14 knots (16 mph; 26 km/h)[1]
Complement:	180[1]
Sensors and processing systems:	Radar Air search: Square Tie Surface search: Pot Head Navigation: Pot Drum Fire control: Drum Tilt Sonar Stag horn; hull-mounted active search/attack sonar
Armament:	Missiles: SSM - two CSS-N-1 Guns 2x 100 mm (4 in)/56 (single); 4x 57 mm (2 in) (twin); twelve or four 30 mm (1 in)/66 (6 or 2 twin); 12x 25 mm (1 in) machine guns (6 twin) Other: Two RBU 1200 five-tube fixed launchers Depth charges (two projectors, two racks) 30 mines

The North Korean Najin-class frigates are some of the largest vessels in the Korean People's Navy. Although they bear a striking resemblance to ex-Soviet Kola class frigates, they are unrelated to any Russian or Chinese design.^[2] The class was originally fitted with a trainable triple 21 inch torpedo launcher, which was replaced in the mid-1980s with fixed Styx missile launchers taken from Osa class missile boats. The design is inherently dangerous, and even a minor missile failure would result in significant damage to the ship.^[2]

References

1. ^ ^{a b c d e f g h i j k} Jane's Fighting Ships 1983-84. pp. 299. ISBN 0 7106-0774-1. 
2. ^ ^{a b} Wertheim, Eric (2007). Naval Institute Guide to Combat Fleets of the World: Their Ships, Aircraft and Systems. Annapolis: Naval Institute Press. pp. 424. ISBN 978-1-59114-955-2.