Dolgorae-class submarine

The Dolgorae-class submarine (Hangul: 돌고래급 잠수정) was a type of midget submarine designed and acquired for the Republic of Korea Navy. All three units are now retired.

Dolgorae-class submarine
Class overview
BuildersKorea Takoma Shipyard
Operators Republic of Korea Navy
Preceded byCosmos class
Succeeded byChang Bogo class
In commission19852016
Completed3
Retired3
Preserved1
General characteristics
TypeMidget submarine
Displacement175 tonnes (172 long tons) full load
Length25 m (82 ft 0 in)
Beam2.1 m (6 ft 11 in)
Speed16 knots (30 km/h; 18 mph)
Complement14
Sensors and
processing systems
  • STN Atlas hull-mounted sonar
  • Pilkington CK037 / CK041 search periscope
Armament2 × 406 mm (16 in) torpedo tubes

These midget submarines were the first South Korean submarines of any type. They were acquired primarily to obtain initial experience with the basics of operating a submarine force. The secondary mission to train surface ASW ships in the detection of North Korean midget submarines.

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