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History
Japan
Name	Setoshio (せとしお)
Ordered	1978
Builder	Mitsubishi, Kobe
Laid down	17 April 1979
Launched	10 February 1981
Commissioned	17 March 1982
Decommissioned	30 March 2001
Reclassified	ATSS-8008 TSS-3602
Homeport	Kure
Identification	Pennant number: SS-575
Fate	Scrapped
General characteristics
Class and type	Yūshio-class submarine
Displacement	2,200 tonnes (surfaced) 2,450 tonnes (submerged)
Length	76.0 m (249.3 ft)
Beam	9.9 m (32.5 ft)
Draught	7.4 m (24.3 ft)
Propulsion	1-shaft diesel-electric 3,400 shp (2,500 kW) (surfaced) 7,200 shp (5,400 kW) (submerged)
Speed	12 knots (22 km/h; 14 mph) (surfaced) 20 knots (37 km/h; 23 mph) (submerged)
Complement	10 officers 65–70 enlisted
Sensors and processing systems	Sonar Hughes/Oki ZQQ 5 hull mounted sonar ZQR 1 towed array Radar JRC ZPS 5/6 I-band search radar.
Armament	6 × 21 in (533 mm) torpedo tubes with reloads for: 1.) Type 89 torpedo 2.) Type 80 ASW Torpedo 3.) UGM-84 Harpoon

JDS Setoshio (SS-575) was a Yūshio-class submarine. She was commissioned on 17 March 1982.^[1][2]

Setoshio was laid down at Mitsubishi Heavy Industries Kobe Shipyard on 17 April 1979 and launched on 10 February 1981. She was commissioned on 17 March 1982, into the 2nd Submarine Group.

She joined as the 3rd submarine of the 2nd Submarine Group in Yokosuka on 1 March 1983.

From July 22 to July 23, 1988, she participated in the Izu Oshima Offshore Exhibition Training with JDS Kurama.

On 6 June 1989, while she was acting as an anti-submarine training target ship, she came in contact with the seabed of the Tsugaru Straits, damaging her bow.

She was transferred to the 1st submarine of the 1st Submarine Group on 1 March 1994, and her fixed port was transferred to Kure.

On 10 March 1999, she was reclassified as an auxiliary submarine, her hull number changed to ATSS-8008, and she was transferred to the 1st Submarine Group as a direct control ship.

On 9 March 2000, she was reclassified as a training submarine, her hull number was TSS-3602, and she was transferred to the first training submarine, which was newly formed under the submarine fleet, with JDS Asashio.

She was decommissioned on 30 March 2001.^[3]