UNKAI MARU No. 1 - Class Auxiliary collier

(UNKAI MARU No. 1, prewar)

This class consists of UNKAI MARU No. 1 only, completed in 1932 for Nakamura G.K. She was requisitioned in Sep 41 by the IJN and registered in Dec 41 as an auxiliary collier. In Jan 42, she was torpedoed and by an American submarine, abandoned and left drifting, and ultimately bombed and sunk by an IJNAF aircraft off Katsuura Bay.

Builder and Year Completed: Tama. Mitsui Bussan Zosenbu K.K. shipyard.
Gross tonnage: 2,225-tons
Dimensions: 274.9(lpp) x 40.6' x 23.0'
Propulsion: One triple expansion steam engine, one shaft, 1,200 shp.
Speed: Unknown.
Armament: Unknown.