Oyashio-class submarine

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Oyashio at Pearl Harbor in 2006
Class overview
Name	Oyashio (おやしお, Oyashio Current)
Builders	Kawasaki Shipbuilding Corporation Mitsubishi Heavy Industries
Operators	Japan Maritime Self-Defense Force
Preceded by	Harushio class
Succeeded by	Sōryū class
Built	1994–2008
In commission	1998–present
Planned	11
Completed	11
Active	9 (2 converted to training ships)
General characteristics
Type	Attack submarine
Displacement	2,750 tonnes (surfaced) 4,000 tonnes (submerged)
Length	81.7 m (268 ft 1 in)
Beam	8.9 m (29 ft 2 in)
Draught	7.4 m (24 ft 3 in)
Propulsion	Diesel-electric 2 Kawasaki 12V25S diesel engines 2 Kawasaki alternators 2 Toshiba motors 3,400 hp (2,500 kW) surfaced 7,750 hp (5,780 kW) submerged
Speed	12 knots (22 km/h; 14 mph) (surfaced) 20 knots (37 km/h; 23 mph) (submerged)
Complement	70 (10 officers)
Sensors and processing systems	Sonar: Hughes/Oki ZQQ-6 hull-mounted sonar, flank arrays, 1 towed array Radar: JRC ZPS 6 I-band search radar.
Armament	6 × HU-605 21 in (533 mm) torpedo tubes with 20 reloads for: Type 89 torpedoes UGM-84 Harpoon missiles

The Oyashio class is a series of Japanese diesel-electric attack submarines operated by the JMSDF. The submarines entered service in the late 1990s. The submarines are larger than the earlier Harushio class, to provide space for a flank sonar array.