RIKUGUN YUSOSEN

Koyo Maru Class Auxiliary Transport

KOYO MARU, prewar)

2016 Bob Hackett


KOYO MARU was completed in 1918 by Uraga Dock Company as a 5,471-ton cargo ship as the only ship in its class. In Feb '44, KOYO MARU was torpedoed and sunk by an American submarine off the Ogasawara (Bonin) Islands.

Builder and
Years Completed:
Uraga Dock Company
1919
Gross tonnage: 5,471- tons.
Dimensions: 400' (LPP) x 53' x 32'
Propulsion: 2 triple expansion steam engines 258 NHP/3,368 IHP
Speed: 10/14.5 knots
Armament: Unknown AP.