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Ocean surveillance ship JS Aki (AOS-5203)

Ocean surveillance ship JS Aki (AOS-5203) 0Ocean surveillance ship JS Aki (AOS-5203) 1Ocean surveillance ship JS Aki (AOS-5203) 2Ocean surveillance ship JS Aki (AOS-5203) 3

Classification

Ship class:
Hibiki-class ocean surveillance ship
Type:
Research ship

Basic information

Namesake:
Aki is a city located in Kōchi Prefecture, Japan
Operator:
Japan Maritime Self-Defense ForceJapan Maritime Self-Defense Force
Country of build:
Builder:
Mitsui Engineering & ShipbuildingMitsui Engineering & Shipbuilding
Ordered:
Laid down:
Launched:
Commissioned (service):
Status:
Active

Ship measurements

Displacement:
2,850 t
Length:
67 m
Beam:
29.9 m
Draft:
7.5 m

Machine

Propulsion:
  • 4 * MTU 8V 4000 M33S diesel engines
  • 2 * shafts
Speed:
11 knots
Range:
3,800 nautical miles

Personnel

Complement:
40

Combat assets

Electronics:
  • OPS-16
  • OPS-9
  • Sonar AN / UQQ-2

JS Aki (AOS-5203) is a Hibiki-class ocean surveillance ship of Japan Maritime Self-Defense Force.

Hibiki-class vessels have a beam of 30 metres (98 ft 5 in), a top speed of 11 knots (20 km/h; 13 mph), and a standard range of 3,800 nautical miles (7,000 km; 4,400 mi). Each vessel has a crew of 40, including five American civilian technicians, and a flight deck for helicopters to operate off of. They are able to deploy on station for 90 days.

The vessels have an AN/UQQ-2 Surveillance Towed Array Sensor System (SURTASS), which is installed in the United States. Data from the sensors is relayed through the Defense Satellite Communications System, and processed and shared with the United States. The data is fed into the Integrated Undersea Surveillance System.

Aki was laid down in October 2018 at Mitsui Engineering & Shipbuilding, Tamano and launched on 15 January 2020. She was commissioned on 4 March 2021.

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