Chin Jen and Ting Pien were built in the 1930s by the Japanese for the Manchukuo Imperial Navy
At 290-tons, Chin Jen and Ting Pien were built in the 1930s by the Japanese for the Manchukuo Imperial Navy as seen here and operated on the Sungari River as a part of the 1st Patrol Division until 1945. Armed with a pair of 120mm/45 DP mounts, two 170mm mortars, and some machine guns, they were both captured without a fight by the Soviets in August 1945. Refitted with Russian armament, they served on the Amur river as patrol boats until 1951, as training ships until at least 1953.