Auxiliary Transports

(IMIZU MARU, prewar)

This class consists of IMIZU, WAYO, RYUKO, BOKUYO, MEIWA, AIYO, HISASHIMA, MASASHIMA, KANAYAMASAN, SHOEI, HEIJO, KEIJO, TAIKOKU, HASSHU (YASHIMA) and NICHINAN MARUs completed between Apr 40 and Dec 42 for various shipping companies. HISASHIMA and MASASHIMA MARUs remainded under civilian control. AIYO and NICHINAN MARU were requisitioned by the IJA and served as Army transports. The others were requisitioned by the IJN, WAYO MARU being first converted to an auxiliary water tanker, later rerated an auxiliary transport, IMIZU MARU being first converted to an auxiliary minesweeper tender, later rerated an auxiliary transport, RYUKO and KANAYAMASAN MARUs being converted to auxiliary transports, HEIJO and KEIJO being converted to auxiliary gunboats, BOKUYO, SHOEI and MEIWA MARUs serving as general requisitioned transports. All were sunk between Aug 42 and Mar 45 from various causes.

Builder and Year Completed: Various shipyards. Between 1940 and 1942
Gross tonnage: From 2,721-tons to 2,924-tons
Dimensions: 307.7' Lpp x 44.9' x 24.9'
Propulsion: Compound Engine, 1 shaft, 1400 bhp.
Speed: 11.5 knots cruising, 14 knots max.
Armament: At least two 12cm/12 deck guns.