sentences:  A version of this gun, possibly the Chinese-manufactured Type 59-1, is suspected to have been used by North Korea for shelling the South Korean island of Yeonpyeong in the Yellow Sea on 23 November 2010.The US Defense Intelligence Agency has reported the existence of a number of locally designed self-propelled artillery systems, including the SPG 130 mm M1975, the SPG 130 mm M1981 and the SPG 130 mm M1991.Details are not available, but they appear to be M-46/Type 59s mounted on a tracked chassis “Tokchon”.