Japanese cargo ship (ex-Rozan Maru 1918-1931, Karafuto Maru 1931-1937) Nitiryu Maru/Nichiryu Maru 1937-1943

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Standard B-type 8,800 tons deadweight cargo ship. Biyo Maru-Boston Maru-Ruyo Maru-Havre Maru-Hukyo Maru-Kasyu Maru-Koyo Maru-Meigen Maru-Milan Maru-Nitiai Mar-Nitiren Maru-Nitiryu Maru-Oyo Maru-Reiyo Maru-Yosida Maru No. 1-Zyuyo Maru. Call sign JOZD. Laid down by Asano S.B. Co. Ltd. Tsurumi, Japan on 14 November 1918, launched on 1 May 1919, delivered on 30 May 1919 and lost in an air attack on 7 January 1943. Gross tonnage 5,447 tons, under deck 4,996 tons, netto tonnage 3,406 tons and as dimensions 400.00 x 53.0 x 29.4 x 8 (light)-26 (loaded) feet. Reciprocating propulsion, single screw, horsepower 513 nhp, bunker capacity 1850 tons, range 13,500 nautical miles/10 knots and speed 10 (normal cruising)-12 (maximum) knots.