A look into Sinpo and Mayang-do: the keys to North Korea's ongoing search for a ballistic missile submarine. North Korea's submarine-launched ballistic missiles are making steady progress.

Analysis of North Korean video footage suggests a less-impressive submarine-launched ballistic missile test than Kim Jong-un would like.

North Korea appears to be building its first operational ballistic missile submarine. Satellite images analyzed by 38 North seem to indicate that construction of such a vessel is well underway ...

The Hero Kim Gun-Ok is vastly different from other missile submarines operated by the DPRK. Previously, Sinpo-C-class submarines, which are also modified Romeos, were believed to carry a smaller ...

North Korea will increase efforts to extend the range of its submarine-launched ballistic missiles (SLBM) to more than 2,000 ...

North Korea may be receiving technical assistance from outside powers to develop its submarine launched ballistic missile (SLBM) technology. Pyongyang currently has one experimental Sinpo-B diesel ...

It is the Sinpo-C/Gorae class submarine, introduced into service in 2023, a modification of the Romeo class. This carrier has ...