SEIA MARU-Class Auxiliary Transport

(SEIA MARU prewar)

This class consists of SEIA, NANA and TOA MARU, the latter being renamed TOA MARU No. 2 GO in 41. They were completed between Apr 39 and Jun 40 for Osaka Shosen K.K. All were requisitioned in 1941 by the IJN, SEIA MARU was converted to an auxiliary ammunition ship and the other two served as auxiliary transports. All were bombed and sunk by US or Dutch aircraft between Jan 42 and Aug 44.

Builder and Years Completed: Aioi. Harima Zosensho K.K. shipyard (SEIA and NANA MARU) Koyagijima. Kawaminami Kogyo K.K. Zosensho shipyard (TOA MARU)
Gross tonnage: 6,658 to 6,757-tons
Dimensions: 438.6' x 58.4' x 32.8'
Propulsion: One steam turbine, 1 shaft, 4,200 n.h.p. (SEIA MARU) One diesel engine, 1 shaft, 5,800 n.h.p. (NANA and TOA MARU)
Speed: 14 knots cruising, 19.5 knots max.
Armament: Unknown.