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JS Mashū underway in the Persian Gulf on 22 September 2006.
Class overview
Builders	Hitachi Shipbuilding Corporation, Maizuru Ishikawajima-Harima Heavy Industries, Tokyo
Operators	Japan Maritime Self-Defense Force
Preceded by	Towada class
Planned	2
Completed	2
Active	2
General characteristics
Type	Fast combat support ship
Displacement	13,500 tonnes standard 25,000 tonnes full load
Length	221 m (725 ft)
Beam	27.0 m (88.6 ft)
Draught	8.0 m (26.2 ft)
Propulsion	2 × Kawasaki Rolls-Royce Spey SM1C gas turbines 40,000 shp (29,828 kW) each 2 × shafts
Speed	24 knots (44 km/h; 28 mph)
Range	9,500 nmi (17,594 km; 10,932 mi) at 20 knots (37 km/h; 23 mph)
Complement	150
Sensors and processing systems	OPS-28 Surface Search RDF OPS-20 Navigation RDF
Electronic warfare & decoys	NOLR-8 RDF Interceptor Mk.137 decoy launchers
Armament	2 × Phalanx CIWS
Aircraft carried	1 × helicopter
Aviation facilities	Helicopter deck and enclosed hangar

The Mashū class is a series of replenishment oilers of the Japan Maritime Self-Defense Force. They were built from 2002 to 2004. The ships have the hull designator AOE.

The Mashū class was designed as an enlarged, improved version of the Towada-class fast combat support ships. The vessels are capable of mounting 2 Phalanx CIWS by design. They are in commission from 2004 onwards.

List of ships

Gallery

• JS Mashū in Maizuru Naval Base on 13 April 2019.
• JS Ōmi underway in January 2017.

References

1. Wertheim, Eric (2013). The Naval Institute Guide to Combat Fleets of the World, 16th Edition. Naval Institute Press. p. 377. ISBN 978-1591149545.
2. "Materials of IJN (JMSDF Vessels - Mashu class Combat support ships)". admiral31.world.coocan.jp. Retrieved 2020-10-01.

External links

• Auxiliary replenishment ship classes
• Auxiliary ships of the Japan Maritime Self-Defense Force
• Ships built by Hitachi Zosen Corporation
• Mashū-class replenishment ships