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History
Name	Hario
Namesake	Hario Channel
Builder	Harima Zōsen Corporation
Laid down	2 June 1944
Launched	4 October 1944
Completed	1 December 1944
Commissioned	1 December 1944
Decommissioned	10 May 1945
Fate	Sunk on 3 March 1945
Class overview
Preceded by	Kazahaya-class oiler
Succeeded by	Muroto-class collier
General characteristics
Type	Replenishment oiler
Displacement	18,500 long tons (18,797 t) standard
Length	154.32 m (506 ft 4 in) Lpp
Beam	20.00 m (65 ft 7 in)
Draught	8.80 m (28 ft 10 in)
Propulsion	1 × Mitsubishi geared turbine; 2 × Mk.21 simple boilers; single shaft, 8,600 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	unknown
Complement	unknown
Armament	2 × 120 mm (4.7 in) L/45 AA guns; 16 × Type 96 25mm AA guns;

The Hario (針尾) was a Japanese fleet oiler, serving during World War II. Four vessels were planned under the Maru Sen Programme; however, only one vessel was completed by the end of war.

Construction

The Hario-class oilers were planned instead of the cancelled Kazahaya class oilers. The Navy Technical Department (Kampon) armed these vessels as a Type 1TL wartime standard ship.

Service

The Hario was completed and assigned to the Combined Fleet on 1 December 1944, joining the Hi-89 convoy from Moji to Singapore on 24 January 1945. She arrived in Singapore on 9 February 1945, joining the Hi-94 convoy (returning to Moji from Singapore) on 23 February 1945. On 1 March, she arrived at a relay point at Yulin, Hainan. Two days later, on 3 March, she left Yulin, only to hit a mine and sink the same day.^[1] She was decommissioned 10 May.

Ships in class

Ship #	Ship	Builder	Laid down	Launched	Completed	Fate
4901	Hario (針尾)	Harima Zōsen Corporation	2 June 1944	4 October 1944	1 December 1944	Struck a naval mine at Yulin and sank on 3 March 1945.^[1]
4902	Inatori (稲取)					Cancelled in 1945.
4903	Karasaki (韓崎)
4904	Tatsumai (龍舞)

Footnotes

^ ^a ^b ^c Another opinion: Sank on 15:07, 4 March 1945.

References

Ships of the World special issue Vol.47, Auxiliary Vessels of the Imperial Japanese Navy, "Kaijinsha"., (Japan), March 1997
Shinshichirō Komamiya, The Wartime Convoy Histories, "Shuppan Kyōdōsha". Archived from the original on 2011-07-22. Retrieved 2009-05-23., (Japan), October 1987, ISBN 4-87970-047-9