| Career (Japan) | |
|---|---|
| Name: | JDS Oyashio |
| Builder: | Kawasaki Heavy Industries, Kobe |
| Laid down: | 25 December 1957 |
| Launched: | 25 May 1959 |
| Commissioned: | 30 June 1960 |
| Decommissioned: | 30 September 1976 |
| General characteristics | |
| Displacement: | 1,139 long tons (1,157 t) surfaced 1,420 long tons (1,443 t) submerged |
| Length: | 78.8 m (258 ft 6 in) |
| Beam: | 7 m (23 ft 0 in) |
| Draught: | 4.6 m (15 ft 1 in) |
| Propulsion: | 2 × Kawasaki V8V22/30MATL diesel-electric, 2,700 bhp (2,013 kW) surfaced, 5,960 shp (4,444 kW) submerged |
| Speed: | 19 knots (35 km/h; 22 mph) submerged 13 knots (24 km/h; 15 mph) surfaced |
| Range: | 10,000 nmi (19,000 km) |
| Complement: | 65 |
| Armament: | 4× 533 mm (21 in) Bow torpedo tubes |
Oyashio (SS-511) was a submarine of the Japan Maritime Self-Defense Force, named after the Oyashio Current, a cold current that comes down through the Bering Strait.
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Following the loan of the Gato-class submarine USS Mingo as an underwater target in 1955, the Japan Maritime Self-Defense Force proposed the construction of three new classes of submarine, of 250, 500 and 1000 tons. In the end only the third of these classes was built, and the final weight grew to 1140 tons. Having been world leaders in submarine construction during World War II, the Japanese had built no submarines for over ten years, so JDS Oyashio was based on the wartime Imperial Japanese Navy I-201 with some US innovations. Laid down on 25 December 1957, and launched on 25 May 1959, Oyashio was commissioned on 30 June 1960.
On 1 August 1962 Oyashio was assigned to Subron 1, Kure district. In June–August 1963 she visited Pearl Harbor. Assigned to Subron 2, Submarine Flotilla 1 on 1 February 1965. Assigned to Submarine Flotilla 1 on 31 March 1975. Oyashio was finally decommissioned on 30 September 1976.
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