Ondo class oiler

Ondo in August or September 1937
Class overview
Name:	Ondo class oiler
Builders:	Kawasaki Shipbuilding Corporation Kure Naval Arsenal Yokosuka Naval Arsenal
Operators:	Imperial Japanese Navy
Preceded by:	Kamoi
Succeeded by:	Kazahaya
Cost:	2,250,000 JPY
Built:	1922–1924
In commission:	1923–1946
Planned:	5
Completed:	3
Cancelled:	2
Lost:	2
Retired:	1
General characteristics
Displacement:	15,400 long tons (15,647 t) standing
Length:	138.68 m (455 ft 0 in) Lpp
Beam:	17.68 m (58 ft 0 in)
Draught:	8.08 m (26 ft 6 in)
Propulsion:	Ondo 1 × three expansion stages reciprocating engine 4 × Kampon water tube boilers single shaft, 3,750 shp Hayatomo and Naruto 1 × three expansion stages reciprocating engine 4 × Miyahara model water tube boilers single shaft, 3,750 shp
Speed:	12 knots (14 mph; 22 km/h)
Capacity:	8,000 tons for oil
Complement:	157
Armament:	Ondo, 1923 • 2 × 140 mm (5.5 in) L/50 naval guns • 2 × 76.2 mm (3.00 in) L/40 AA guns

The Ondo class oiler (隠戸型給油艦, Ondo-gata kyūyukan^?) was a class of three oilers of the Imperial Japanese Navy (IJN), serving during the 1920s and the World War II.

Construction

The Ondo class were initially planned in 1920 as the six of the Kamoi class oilers under the Eight-eight fleet final plan. However, the Kamoi class oilers were built only the Kamoi, because the Washington Naval Treaty was concluded. Other five vessels were re-planned to the Modified Notoro class oiler. And one vessel became the icebreaker Ōtomari, other one vessel become the food supply ship Mamiya. Therefore, three vessels was built as Modified Notoro class (Ondo class) oiler.

Service in peace time

They devoted themselves to importing crude oil from North America and Southeast Asia. The crude oil which the Ondo class and the Notoro class carried to Japan was 388 sorties; 3,000,000 tons, until 1941.

Service in Pacific War

They were not able to accompany to fleet, because they were low speed. They were engaged in a supplying duties at the naval bases.

Ships in class

Ship	Builder	Laid down	Launched	Completed	Fate
隠戸?)	Kawasaki-Kōbe Shipyard	15-03-1922	21-10-1922	12-03-1923	Sunk by air raid at Manila Bay 13-11-1944.
早鞆?)	Kure Naval Arsenal	14-03-1922	04-12-1922	18-05-1924	Scuttled off Singapore, 1946. Decommissioned on 03-05-1947.
鳴戸?)	Yokosuka Naval Arsenal	11-04-1922	30-01-1923	30-10-1924	Heavy damaged by air raid at Rabaul, 14-01-1944 and grounded. Damaged once again 02-03-1944. Scuttled 15-03-1944.
2 vessels					Re-planned to the icebreaker and food supply ship.

Photo

• 

  Hayatomo

• 

  Hayatomo in October 1925, showing drill camouflage

• 

  Hayatomo on 26 December 1942 at Seletar

• 

  Naruto on 29 May 1932 at Yokosuka

• 

  Naruto under attack in 1944 at Rabaul

See also

八八艦隊案 (ja)

Bibliography

• "Rekishi Gunzō". http://rekigun.net/. , History of Pacific War Vol.37, "Support vessels of the Imperial Japanese Forces", Gakken (Japan), June 2002, ISBN 4-05-602780-3
• Ships of the World special issue Vol.47, Auxiliary Vessels of the Imperial Japanese Navy, "Kaijinsha". http://www.ships-net.co.jp/.  (Japan), March 1997
• The Maru Special, Japanese Naval Vessels No.34, "Japanese auxiliary vessels", "Ushio Shobō". http://www.kojinsha.co.jp/.  (Japan), December 1979
• Senshi Sōsho Vol.31, Naval armaments and war preparation (1), "Until November 1941", Asagumo Simbun (Japan), November 1969