ROKS Sung In Bong on 3 February 2010
Class overview
Builders	Hanjin Heavy Industries
Operators	Republic of Korea Navy
Preceded by	Un Bong class
Succeeded by	Cheon Wang Bong class
Built	1991 - 1996
In service	1994 - present
In commission	1994 - present
Completed	4
Active	4
General characteristics
Type	Landing Ship, Tank
Displacement	2,600 tons (empty) / 4,300 tons (full)
Length	112.7 m (370 ft)
Beam	15.4 m (51 ft)
Draught	3.1 m (10 ft)
Installed power	12,800 hp (9,500 kW)
Propulsion	2 × SEMT Pielstick 16 PA6V 280 diesel engines
Speed	16 knots (30 km/h; 18 mph) maximum 12 knots (22 km/h; 14 mph) cruising
Range	4,500 nmi (8,300 km; 5,200 mi)
Capacity	258 marines 12 tanks 14 amphibious assault vehicles 8 2.5ton trucks 4 LCVP
Crew	121
Sensors and processing systems	Raytheon SPS-54 radar
Armament	4 × Emerlec 30mm (LST-681) or 4 × 40mm Breda L/70K (LST-682, LST-683, LST-685) 2 × Vulcan 20 mm Gatling
Aircraft carried	1 × UH-60 helicopter
Aviation facilities	Aft helicopter deck

Go Jun Bong-class tank landing ship (Hangul: 고준봉급 전차상륙함, Hanja: 孤準峰級戰車上陸艦) is an amphibious landing ship class of the Republic of Korea Navy.

In the late 1980s the Republic of Korea Navy decided to gradually replace its aging fleet of WW2 era LST-542-class tank landing ships (renamed Un Bong class) bought from the US Navy in 1958. A three phase plan was laid out to develop new landing ships to meet the demands of modern amphibious and transport operations.

The first phase was designated as the LST-I project, and development and design started in 1987 by Korea Tacoma, currently Hanjin Heavy Industries. After 4 years of development, the lead ship Go Jun Bong (LST-681) was launched in 1991. Three more ships followed and all four ships were commissioned by 1998.

The second phase, or LST-II, was originally planned to import four Newport-class tank landing ships, but after being postponed due to budget issues, it was changed in favor for domestic built 4500 ton LPDs to be commissioned by 2013-2016.^[1] These ships will ultimately replace the Un Bong class and Go Jun Bong-class tank landing ships.

LST-III was to build two mid-size helicopter amphibious landing ships, and designing started in 1997. In 2001 it was renamed as the LPX project and a total of two 14,300 ton ships were ordered for the Republic of Korea Navy. On July 3, 2007 the lead ship Dokdo was commissioned.

Go Jun Bong-class tank landing ship is based on the design of the LST-542 class, and thus its exterior is very similar to the Un Bong class.

The ship is designed to land multiple personnel, tanks and equipment simultaneously with doors and ramps placed on both the stern and bow of the ship, unlike the Un Bong class which only has doors on the bow. It is also equipped with a turn table, saving time when loading or landing vehicles. There is also a ramp for moving trucks up to the deck, and multiple elevators for rapid cargo loading.

Wikimedia Commons has media related to Go Jun Bong class LSTs.

v t e   Commissioned ships of the Republic of Korea Navy
Submarines	Dosan Ahn Changho-class SS Dosan Ahn Changho Ahn Mu Shin Chae-ho Sohn Won-yil-class SS Sohn Won-yil Jeong Ji An Jung-geun Kim Jwa-jin Yun Bong-gil Yu Gwan-sun Hong Beom-do Lee Beom-seok Shin Dol-seok Jang Bogo-class SS Jang Bogo Yi Cheon Choe Museon Park Wi Lee Jongmoo Jung Woon Yi Sun-sin Na Dae-yong Yi Eokgi Dolgorae-class SSM Dolgorae 051 Dolgorae 052 Dolgorae 053
Destroyers	Sejong the Great-class DDG Sejong the Great Yulgok Yi I Seoae Ryu Seong-ryong Jeongjo the Great Chungmugong Yi Sun-sin-class DDH Chungmugong Yi Sun-sin Munmu the Great Dae Jo-yeong Wang Geon Gang Gam-chan Choe Yeong Gwanggaeto the Great-class DDH Gwanggaeto the Great Eulji Mundeok Yang Man-chun
Frigates	Daegu-class FFG Daegu Gyeongnam Seoul Donghae Daejeon Pohang Cheonan Chuncheon Incheon-class FFG Incheon Gyeonggi Jeonbuk Gangwon Chungbuk Gwangju Ulsan-class FF Chungnam Masan Gyeongbuk Jeonnam Jeju Busan Cheongju
Corvettes	Pohang-class PCC Jinhae Wonju Andong Bucheon Seongnam Jecheon Daecheon Sokcho Yeongju Namwon Gwangmyeong Sinseong Gongju
Patrol vessels	Yoon Youngha-class PKG Yoon Youngha Han Sanggook Jo Chunhyung Hwang Dohyun Suh Hoowon Park Donghyuk Jung Geungmo Ji Deokchil Lim Byeongrae Hong Siuk Hong Daeseon Han Munsik Kim Changhak Park Dongjin Kim Soohyun Jeon Byeongik Lee Byungchul Chamsuri 211-class PKMR Chamsuri 211 - 229 Chamsuri-class PKM Chamsuri 298 - 375
Amphibious warfare ships	Dokdo-class LPH Dokdo Marado Cheon Wang Bong-class LST Cheonwangbong Cheonjabong Ilchulbong Nojeokbong Go Jun Bong-class LST Gojunbong Birobong Hyangnobong Seonginbong Solgae 631-class LSF Solgae 631 Solgae 632 Solgae 633 Solgae 635 Solgae 621-class LSF Solgae 621 Solgae 622 Solgae 623
Mine warfare ships	Nampo-class MLS Nampo Wonsan-class MLS Wonsan Yangyang-class MSH Yangyang Ongjin Haenam Ganggyeong-class MHC Ganggyeong Gangjin Goryeong Gimpo Gochang Gimhwa
Auxiliary ships	Soyang-class AOE Soyang Cheonji-class AOE Cheonji Daecheong Hwacheon Pyeongtaek-class ATS Pyeongtaek Gwangyang Tongyeong Cheonghaejin-class ASR Cheonghaejin Singiwon-class AGS Singiwon Sinsegi-class AGS Sinsegi Dadohae-class ASL Dadohae Mulgae 87-class LCU Mulgae 87 - 91 Mulgae 79-class LCU/L Mulgae 83 - 86