She was laid down on 18 October 1922 by Mitsui Tamano Engineering & Shipbuilding at their Tamano shipyard. She was launched on 9 February 1923, completed on 31 March 1923, and registered in Otaru as Hokkai Maru No. 2.[1] She was renamed Hayataka Maru in 1932 when she was sold to the Teikoku Salvage Co.[3] Although Lloyd's Register of Shipping lists her as Hayataka Maru, she was also known as Soryu Maru.[4][2]
Her sister ship was Hokkai Maru No. 1 (renamed Suzuya Maru).[5]
^ abcLettens, Jan (4 April 2014). "Hayataka Maru (1932~1936) Soryu Maru (+1941)". wrecksite.eu. According to JANAC the vessel was HAYATAKA MARU but Japanese Monograph no.116 states she was SORYU MARU of 856 GRT. The latter is usually more reliable. But as Jan-Olof points out they seem to refer to the same vessel and this is possibly a difference in translation. Note that the Lloyds Register of Shipping of 1941-1942 lists only the HAYATAKA MARU (836 GRT, built by Mitsui in 1923, ex-HOKKAI MARU no.2).