Japanese fleet oiler Hayasui

Career
Hayasui on 19 August 1944
Name:	Hayasui
Namesake:	Hayasui-no Seto
Builder:	Harima Dock Company
Laid down:	1 February 1943
Launched:	25 December 1943
Completed:	24 April 1944
Decommissioned:	10 October 1944
Fate:	Sunk 19 August 1944
General characteristics
Displacement:	18,300 long tons (18,594 t) standard
Length:	161.00 m (528 ft 3 in) overall
Beam:	20.10 m (65 ft 11 in)
Draught:	8.83 m (29 ft 0 in)
Propulsion:	1 × Ishikawajima geared turbine 2 × Kampon Mk.21 simple boilers single shaft, 9,500 shp
Speed:	16.5 knots (19.0 mph; 30.6 km/h)
Range:	9,000 nmi (17,000 km) at 16 kn (18 mph; 30 km/h)
Capacity:	• 9,800 tons for heavy crude oil • 200 tons for gasoline • 750 tons for fresh water • Fresh vegetables for 2 weeks × 2,800 men • Foods for 30 days × 1,100 men
Complement:	301
Armament:	• 4 × 127 mm (5.0 in) L/40 AA guns • 8 × Type 96 25mm AA guns
Aircraft carried:	6 + 1 (Aichi E13A or Aichi B7A)
Aviation facilities:	catapult and deck

The Hayasui (速吸) was a Japanese fleet oiler (hybrid tanker/carrier) of the Imperial Japanese Navy (IJN), serving during the World War II.

Construction

Hayasui was completed as one of the Kazahaya class fleet oilers. After lack of reconnaissance planes was identified as a contributing factor to defeat of the IJN at the Battle of Midway, aviation facilities were added to Hayasui for accompanying the carrier task force. The IJN added the function of food supply ship to Hayasui to improve carrier task force endurance following experience at the Battle of the Santa Cruz Islands.

Service

24 April 1944 : Completed.
May 1944 : Sailed to Tawi-Tawi for Operation A.
19 to 20 June 1944 : Participation to the Battle of the Philippine Sea and damaged.
10 August 1944 : Repairs were completed for convoy Hi-71 departure from Moji to Singapore.

Fate

03:20, 19 August 1944 : Hayasui was torpedoed (2 hits) by USS Bluefish at west of Vigan City.
About 05:00 : Explosion and sunk at 17°34′N 119°24′E / 17.567°N 119.400°E / 17.567; 119.400.
10 October 1944 : Decommissioned.

References

"Rekishi Gunzō". , History of Pacific War Vol.62 "Ships of The Imperial Japanese Forces, Gakken (Japan), January 2008, ISBN 978-4-05-605008-0
Ships of the World special issue Vol.47, Auxiliary Vessels of the Imperial Japanese Navy, "Kaijinsha". , (Japan), March 1997

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