Ondo-class oiler

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

Construction

The Ondo class was initially planned in 1920 as the six of the Kamoi-class oilers under the Eight-eight fleet final plan. However, of the Kamoi-class oilers, only the Kamoi was completed, due to the conclusion and signing of the Washington Naval Treaty. The other five vessels were then re-planned to the Modified Notoro class.

Out of the five ships, one became the icebreaker Ōtomari, while the other become the food supply ship Mamiya. Therefore, only three ships were built as Modified Notoro-class (Ondo-class) oilers.

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 heo fleet, because they were low speed. They were engaged in supply duties at naval bases.

Ships in class

Ship	Builder	Laid down	Launched	Completed	Fate
Ondo (隠戸)	Kawasaki-Kōbe Shipyard	15-03-1922	21-10-1922	12-03-1923	Sunk by air raid at Manila Bay 13-11-1944.
Hayatomo (早鞆)	Kure Naval Arsenal	14-03-1922	04-12-1922	18-05-1924	Scuttled off Singapore, 1946. Decommissioned on 03-05-1947.
Naruto (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 as an icebreaker and food supply ship.

Photo

Hayatomo
Naruto on 29 May 1932 at Yokosuka
Naruto under attack in 1944 at Rabaul

Bibliography

"Rekishi Gunzō". , 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". (Japan), March 1997
The Maru Special, Japanese Naval Vessels No.34, "Japanese auxiliary vessels", "Ushio Shobō". (Japan), December 1979
Senshi Sōsho Vol.31, Naval armaments and war preparation (1), "Until November 1941", Asagumo Simbun (Japan), November 1969

External links

Hayatomo

Japanese auxiliary ship classes of World War II

Colliers and oilers	Notoro Ondo Sunosaki Ashizuri Kazahaya^S Hayasui^S Hario^S Muroto Teiyō Maru^S Ōse (ex-Dutch tanker Genota)^SC

Food supply ships	Mamiya^S Nosaki^S Kinesaki Irako^S Kurasaki^SC

Landing ships	No.1 No.101 Shinshū Maru^S (Army) SS (Army)

Armed merchant cruisers	Aikoku Maru^S Kongō Maru^S Noshiro Maru^S

Minelayers and cable layer	Tokiwa^SC Itsukushima^S Yaeyama^S Okinoshima^S Tsugaru^S Minoo^SC Shirataka^S Hatsutaka Tsubame Natsushima (1933) Sokuten (1938) Hirashima Ajiro^S Kamishima Hashima Sokuten (1913) Aux. No.1 Aux. No.101 (ex-HMS Barlight)^SC

Minesweepers	No.1 (1923) No.5 (1928) No.13 No.17 No.7 (1938) No.19 No.101 (ex-HMS Taitam and HMS Waglan)^C Aux. No.1 Aux. No.101 (ex-HNLMS DEFG-class) Aux. No.104 (ex-HNLMS DEFG-class)

Patrol boats	No.1^C No.31^C No.46^SC No.101 (ex-HMS Thracian)^SC No.102 (ex-USS Stewart)^SC No.103 (ex-USS Finch)^SC No.104 (ex-Dutch East Indies Valk and Arend)^C No.105 (ex-Philippine customs Arayat)^SC No.106 (ex-HNLMS Banckert)^SCI No.107 (ex-USS Genesee)^SC No.109 (ex-Dutch East Indies Fazant)^SC Aux. No.1

Repair ships	Asahi^SC Akashi^S Hayase (ex-Chinese passenger Chin Kiang)^SC Hitonose (ex-ROCN Min Sheng)^SC

Seaplane tenders	Notoro Kamoi^SC Chitose Mizuho^S Nisshin^S Akitsushima^S Kamikawa Maru

Submarine chasers	No.1 No.3^S No.4 No.13 No.28 No.60 Aux. No.1 Aux. No.101 (ex-HNLMS Tjerimai)^SC Aux. No.102 (ex-HNLMS Ardjoeno class)^C Aux. No.103 (ex-HNLMS B1 class)^C Aux. No.111 (ex-HNLMS P13 or P14)^SC Aux. No.112 (ex-HNLMS A class)^C Aux. No.117 (ex-HNLMS Bantam)^C Aux. No.251 Aux. No.253^S

Submarine tenders	Komahashi^SC Jingei Taigei^S

Survey ships	Tsukushi^S Katsuriki^SC Hakusa (ex-China customs Fu Hsing)^SC

Target ships	Settsu^SC Yakaze^SC Hakachi^S Ōhama^S

Training ships	Fuji^SC Shikishima^SC Asama^SC Azuma^SC Kasuga^SC Atada (ex-ROCN Yat Sen)^SC

Others	Sōya (freighter)^SC Kashino (turret transporter)^S Ōtomari (icebreaker)^S Tategami (salvage tug) Kasashima (salvage tug) Miura (salvage tug) Kaiyō No.1 (oceanographic research ship) Asuka (traffic ship, ex-ROCN Yung Chien)^SC

S Single ship of class C Converted to ship type I Incomplete until the end of war

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