ROKS Yi Eokgi (SS-071)

ROKS Yi Eokgi (SS-071) is the ninth and last boat of the Jang Bogo-class submarine of the Republic of Korea Navy. She is one of Jang Bogo-class submarines to be built in South Korea.

ROKS Yi Eokgi underway on 7 July 2010.
History
South Korea
Name
  • Yi Eokgi
  • (나대용)
NamesakeYi Eokgi
Ordered12 August 1976
BuilderDSME
Launched24 May 2000
Acquired30 November 2001
Commissioned1 December 2001
IdentificationPennant number: SS-071
StatusActive
General characteristics
Class and typeJang Bogo-class submarine
Displacement
  • 1,180 t (1,160 long tons) surfaced
  • 1,285 t (1,265 long tons) submerged
Length55.9 m (183 ft 5 in)
Beam6.4 m (21 ft 0 in)
Draft5.9 m (19 ft 4 in)
Propulsion
  • 4 MTU Type 12V493 AZ80 GA31L diesel engines
  • 1 Siemens electric motor
  • 1 shaft
  • 4,600 hp (3,400 kW)
Speed
  • 11 knots (20 km/h; 13 mph) surfaced
  • 21 knots (39 km/h; 24 mph) submerged
Range11,300 nmi (20,900 km; 13,000 mi) surfaced at 4 knots (7.4 km/h; 4.6 mph)
Endurance50 days
Complement5 officers, 26 enlisted
Armament

Development

At the end of the 1980s the South Korean navy started to improve its overall capability and began to operate more advanced vessels. South Korea purchased its first submarines, German U-209 class in its Type 1200 subvariant, ordered as the Jang Bogo class. These boats are generally similar to Turkey's six Atilay-class submarines, with German sensors and weapons.[1]

The first order placed late in 1987 covered three boats, one to be completed in Germany and the other two in South Korea from German-supplied kits. There followed by two additional three-boat orders placed in October 1989 and January 1994 for boats of South Korean construction. The boats were commissioned from 1993 to 2001.

The older boats were upgraded, it is believed that the modernization included a hull stretch to the Type 1400 length, provision for tube-launched Harpoon missiles and the addition of a towed-array sonar.[2]

Construction and career

ROKS Yi Eokgi was built by Daewoo Shipbuilding and launched on 24 May 2000. She was acquired by the navy on 30 November 2001 and commissioned on 1 December 2001.

See also

References
  1. "ROKN Chang Bogo Class Submarines". Naval Technology. Retrieved 15 August 2020.
  2. "South Korea Submarine Capabilities | NTI". www.nti.org. Retrieved 15 August 2020.
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