The Pacific War Online Encyclopedia
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| Tonnage | 6400 gross register tons 10425 deadweight tons |
| Dimensions | 445'10" by 58'5" by 32'2" 135.89m by 17.80m by 9.80m |
| Maximum speed | 15 knots |
| Machinery |
1-shaft turbine (3500 shp) 3 boilers |
| Range | 13,000 nautical miles (21,000 km) at 13.5 knots |
The 1As were standard cargo vessels somewhat resembling the Liberty Ships. The design was standardized by the Ministry of Communications, with assistance from the Navy Ministry, early in 1942, and was based on uniform specifications adopted by several yards prior to the war. Construction took about 90 days. The 1As were not significantly different from peacetime designs, with machinery amidships, and were intended for economical use after the war.
Six additional ships were ordered as 1As but completed as Type 2A ships.
| Yamamiya Maru | Completed
1943-10-31 |
Torpedoed
1944-6-25 by Bashaw
off Celebes |
|
Daibu
Maru |
Completed
1944-2-20 |
Torpedoed
1944-5-4 by Tinosa
250 miles southeast of Hong Kong |
| Jokuja Maru |
Completed 1944-3-8 |
Torpedoed
1944-5-15 by Aspro
in Caroline Islands |
References:
Jentschura, Jung, and Mickel (1977)
ONI-208J-S3 (1945-1; accessed 2011-12-18)
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