Natsushio-class submarine

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JS Fuyushio (SS-524).jpg
JS Fuyushio
Class overview
NameNatsushio class
Builders
OperatorsNaval Ensign of Japan.svg  Japan Maritime Self-Defense Force
Preceded by Hayashio class
Succeeded by Ōshio class
Built1961–1963
In commission1963–1978
Planned2
Completed2
Retired2
General characteristics
TypeCoastal attack submarine
Displacement690 long tons (701 t) surfaced
Length61 m (200 ft 2 in)
Beam6.5 m (21 ft 4 in)
Draft4.1 m (13 ft 5 in)
Propulsion
Speed
  • 12 knots (22 km/h; 14 mph) surfaced
  • 15 knots (28 km/h; 17 mph) submerged
Complement43
Armament3 × 533 mm (21 in) torpedo tubes

The Natsushio-class submarines were a pair of submarines constructed and operated by the Japan Maritime Self-Defense Force during the Cold War. They were a development of the Hayashio-class submarines and are sometimes considered the same class. They were small and limited in capability but were thought to be a successful class. They entered service in 1963–1964 and were deleted in 1978.

Contents

Design and description

The Natsushios were a development of the preceding Hayashio class and are sometimes considered the same class. [1] [2] [3] They shared many of the same characteristics with small design improvements. They were small submarines with limited capability [1] but considered handy and a successful class. [4] They were air-conditioned and had good habitability for the crews. The submarines measured 61 meters (200 ft 2 in) long overall with a beam of 6.5 m (21 ft 4 in) and a draft of 4.1 m (13 ft 5 in). The submarines had a standard displacement of 780 long tons (790 t), with a surfaced displacement of 690 long tons (700 t) and 850 long tons (860 t) submerged. [1] [3]

The vessels were powered by a diesel-electric system. Two shafts were powered by two Sulzer-Mitsubishi diesel engines creating 1,350 brake horsepower (1,010  kW ) and two electric motors creating 1,700 shaft horsepower (1,300 kW). This gave the submarines a maximum speed of 12 knots (22 km/h; 14 mph) surfaced and 15 knots (28 km/h; 17 mph) submerged. [1] [a] The Natsushios were armed with three 533-millimeter (21 in) torpedo tubes in the bow. They had a crew of 43. [1]

Boats in class

Natsushio class construction data [1]
Pennant no.NameLaid downLaunchedCommissionedFate
SS-523 Natsushio (なつしお)5 December 196118 September 196229 June 1963Deleted 20 March 1978
SS-524 Fuyushio (ふゆしお)6 December 196114 December 196217 September 1963Deleted 20 June 1978

See also

Notes

  1. Blackman [2] and Moore [4] have the submarines' surfaced speed as 11 knots (20 km/h; 13 mph).

Citations

References