Hakuyo Maru (Japanese: 白陽丸) was a Japanese transport ship of during World War II.
She was laid down on 3 July 1941 at the Kobe shipyard of Mitsubishi Heavy Industries, Ltd. for the benefit of Osaka Merchant Shipping Co., Ltd., Osaka.[1] She was launched on 29 August 1942 and completed on 29 December 1942.[1]
23 October 1944, she left Kataoka Bay Naval Base, Shimushu Island, Kuril Islands for Otaru in convoy WO-303 consisting of transports Hokoku Maru and Umegawa Maru escorted by the destroyer Kamikaze and Etorofu-class escort ship Fukue.[2] [3] The transports are filled with naval personnel and fishery workers being removed to the homeland for the winter from the islands of Shimushu and Paramushiro.[2]
On 25 October 1944, she was torpedoed and sunk by the submarine at 50.35°N 170°W[2] [4] [5] west of the Kuril Islands. She sank quickly in the frigid waters with 1,415 lives lost including 1,312 passengers.[2] Seal evaded depth charge attacks by the escorts and the remainder of the convoy reached Otaru safely.[2]