The Pacific War Online Encyclopedia

Tonnage	6600 gross register tons 11,200 deadweight tons
Dimensions	448'8" by 59'8" by 36'5"" 136.75m by 18.19m by 11.10m
Maximum speed	13 knots
Machinery	1-shaft turbine (3500 shp) 3 boilers
Capacity	60,000 barrels 9,500,000 liters

The 2ATs were ships of the 2A class converted on the ways to tankers by installing large storage tanks in their cargo holds. These were not integral with the hulls and could be removed to revert the ships to dry cargo ships. A number of 2AT tankers were so converted following the fall of the Philippines, which cut the sea lanes to the oil fields of southeast Asia and thereby reduced the usefulness of tankers.

Units in the Pacific:

Shiyo Maru	Completed 1944-3-15	Torpedoed 1944-11-23 by Picuda west of Tsushima
Toshikawa Maru	Completed 1944-3-15	Sunk by aircraft 1944-10-19 at Manila
Amahi Maru	Completed 1944-4-20	Sunk by aircraft 1944-9-24 at Manila
Jakaruta Maru	Completed 1944-5-15
Kenjo Maru	Completed 1944-5-31	Torpedoed 1944-12-7 by Segundo and Razorback north of Luzon
Eikyo Maru	Completed 1944-8-15	Torpedoed by Dace and beached 1944-10-14 on Labuan.
Einin Maru	Completed 1944-8-19
Daimei Maru	Completed 1944-8-24	Torpedoed 1944-11-3 by Gurnard 200 miles northwest of Miri
Daishu Maru	Completed 1944-8-28	Torpedoed 1945-4-29 by Cero off Kamaishi
Enryaku Maru	Completed 1944-8-31
Eiwa Maru	Completed 1944-9-3	Sunk by aircraft 1944-11-13 off Manila
Tamon Maru #15	Completed 1944-9-5	Mined 1945-1-26 off Hone Cape, French Indochina
Ebara Maru	Completed 1944-9-8	Torpedoed 1944-10-25 by Tang in Taiwan Strait.
Asokawa Maru	Completed 1944-9-14	Sunk by aircraft 1945-3-28 near Cam Ranh
Yamamura Maru	Completed 1944-9-20	Converted to dry cargo 1945-3-15
Asakasan Maru	Completed 1944-9-22	Torpedoed 1944-11-18 by Peto 100 miles southwest of Korea
Enki Maru	Completed 1944-9-22	Torpedoed 1945-1-31 by Boarfish off An Nhon, French Indochina
Daito Maru	Completed 1944-9-26	Converted to dry cargo 1945-3. Sunk by aircraft 1945-8-9 off Rashin.
Yamazono Maru	Completed 1944-9-28	Converted to dry cargo 1945-2-15
Awakawa Maru	Completed 1944-9-30
Daietsu Maru	Completed 1944-10-6	Torpedoed 1945-1-31 by Boarfish and finished off by aircraft off French Indochina
Ohtsusan Maru	Completed 1944-10-6	Sunk by aircraft 1945-1-12 25 miles northeast of Binh Dinh, French Indochina
Ojikasan Maru	Completed 1944-10-15	Converted to dry cargo 1945-3-20. Torpedoed 1945-6-13 by Bonefish off Inchon,
Akikawa Maru	Completed 1944-10-18	Torpedoed 1944-12-2 by Sea Devil off Shichito Islands, Japan
Daiei Maru	Completed 1944-10-18	Mined 1945-6-3 off Shimonoseki
Dairetsu Maru	Completed 1944-10-20	Converted to dry cargo 1945-2-28.
Shinyu Maru	Completed 1944-10-23
Enkei Maru	Completed 1944-10-30
Eisho Maru	Completed 1944-10-31
Engen Maru	Completed 1944-11-3	Torpedoed 1945-2-6 by Pampanito 260 miles south of Saigon
Daigyo Maru	Completed 1944-11-12	Torpedoed 1945-2-7 by Guavina 150 miles northeast of Dungun, Malaya
Encho Maru	Completed 1944-11-16	Converted to dry cargo 1945-4-4
Oesan Maru	Completed 1944-11-28
Shingi Maru	Completed 1944-11-29	Sunk by aircraft 1945-5-6 in Inland Sea
Tamon Maru #16	Completed 1944-11-30	Mined 1945-8-12 100 miles northwest of Iki Tettoshiima, Japan
Yamazawa Maru	Completed 1944-12-6	Sunk by aircraft 1945-1-21 off Takao
Dainan Maru	Completed 1944-12-30	Sunk by aircraft 1945-5-5 25 miles east of Ikijima, Japan
Toyohi Maru	Completed 1944-12-30	Torpedoed 1945-5-4 by Tinosa 250 miles southeast of Hong Kong
Tatsuyo Maru	Completed 1944-12-7	Torpedoed 1945-1-8 by Barb 30 miles northwest of Taichung, Formosa.
Yamanami Maru	Completed 1945-1-15	Converted to dry cargo 1945-3-10
Daiha Maru #1	Completed 1945-1-19	Mined 1945-7-23 off Karatsu, Japan
Seiko Maru	Completed 1945-2-15	Mined 1945-8-19 near Nanao, Japan
Yahiko Maru	Completed 1945-2-24
Nissan Maru #1	Completed 1945-3-15	Mined 1945-5-26 off Shimonoseki

References:

Heal (2003)

Jentschura, Jung, and Mickel (1977)

Parillo (1993)

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2AT Class, Japanese Tankers

Units in the Pacific: