Manchurian Navy was formally called as "Jiang Shang Jun" (Army on River, or river flotilla). Its ships mostly served on the Amur River and Ussuri River. The river flotilla was formed on May 28 1932, three months after Manchuria puppet state established. It received five gunboats from former Chinese Northeast river flotilla. After 1934, the flotilla received some new gunboats from Japan, and the old boats were striked down in the 1940s. In the Bohai Sea, 6 sea planes, two old patrol boats, 12 junks and 3 other ships formed the Manchurian coast guard. But the Bohai Sea and Manchurian south coast was controled by Imperial Japanese Navy actually. An old destroyer sent to Manchuria in 1937, but was took back in 1942. After the Pacific war broken, Japan lend Manchuria 7 small escort vessels, commanded by Japanese officers, some of them were took back, and the remained were captured by soviet army after 1945.
Hai Wei, Japanese destroyer Kashi (Momo class), built in 1917, retired in 1937, given to Manchuria and re-classified as coastguard ship. 755 tons, 120mm gun*3, MG*2, TT*4, 31.5 knots (20 knots after donate for one boiler was removed). Four torpedo tubes and one 120mm gun were removed too, but one sea plane and two depth charge sets were added. Took back by IJN in 1942, renamed Kaii, bombed by US air attack and sunk near Okinawa in Oct 1944.
Shun Tian, gunboat, complete 1934, 270 tons, 120mm gun*2, MG*3. Guns removed in 1945 to defence Anshan Steel works, and the boat was captured by Soviet army. Sister ship Yang Min.
Hai Long(Dragon of Sea), Japanese built patrol vessel. 204 tons, 13 knots. One 76mm and one 50 mm gun, depth charge. Captured by soviet army in Port Arthur, serverd for Russian fishery guard till 1970s.