Country of build:
- Diesel-electric, low noise skew back propeller
- 4 * Bumhan Industry PH1 PEM fuel cell each with 150 kW
- 6 * 533 millimetres torpedo tubes (Tiger Shark torpedo and Harpoon)
- 6 * VLS tubes (Cruise and ballistic missile)
ROKS Yi Dong-nyeong (SS-086) is the third attack submarine of the Dosan Ahn Changho-class submarine for the Republic of Korea Navy. The ship was laid down at Hyundai Heavy Industries shipyard on April 14, 2019 and is under construction.