Laid down by the Nagasaki Shipyard of Mitsubishi Heavy Industries Ltd. on 5 December 1944, launched on 30 January 1945, completed on 28 February 1945, decommissioned on 25 October 1945, handed over to the Republic of China on 31 July 1945 and commissioned as the Tsuan until she was decommissioned in 1952. Under the Programme 1943-1944 was the building of 143 ships ordered and under the Programme 1944-1945 were another 57 planned of the Type D escort or coast defence ships. Yet there were just 67 actually completed, the others were cancelled. Originally the ships were to be used for anti-aircraft and submarine warfare after the Navy asked on 22 April 1943 for a basic 800 tons escort design. The Type D design was in fact a simplified Ukuru design. Except for the Japanese navy used by the navies of Russia, China and Taiwan until 1987. General technical details of the Type D escort vessel had a standard displacement of 752 tons and as dimensions 69,5 x 8,6 x 3,05 metres or 228 x 28.3 x 10 feet. The geared turbine machinery supplied via one shaft 2,500 hp allowing a speed of 17,5 knots and a range of 4.500 nautical miles with a speed of 16 knots. The crew numbered 160 men. The original armament consisted of 2-12cm/4.7” 45 cal dual purpose guns, 2x3-2,5cm/0.98” Type 96 anti aircraft machine guns, 12 Type 3 depth charge throwers and 1 depth charge chute for which 120 depth charges were carried. From 1944 on was 1-8,1cm/3.2” mortar added to the armament.
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