Submarines
Simpo / Gorae class SSB (Ballistic missile conventionally powered submarine) (1 active or used as a test platform) LOA ca. 225′ TDISP 1,600 tons submerged (estimate)
Romeo class attack submarines LOA 251′ TDISP 1,800 tons submerged (originally up to 22 transferred, many as Chinese made kits, most now out of service)
Sang-O class coastal submarines LOA 115′ TDISP 370 tons submerged (about 40 in service, 1 unit captured by South Korea)


