The Hwasong-10, also known as Musudan and other names, is a mobile intermediate-range ballistic missile (IRBM) developed by North Korea. Based on the R-27 Zyb submarine-launched ballistic missile (SLBM), Hwasong-10 was unveiled in October 2010 during a military parade and was tested several times in 2016, but only the test on 22 June 2016 was successful.