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HAYASHIO submarines (1962)


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Hayashio 1962

Ships


Name No Yard No Builder Laid down Launched Comp Fate
はやしお [Hayashio] SS521   Shin Mitsubishi, Kobe 6.6.1960 31.7.1961 30.6.1962 discarded 7.1977
わかしお [Wakashio] SS522   Kawasaki, Kobe 7.6.1960 28.8.1961 17.8.1962 discarded 3.1979


Technical data


Displacement standard, t 
Displacement normal, t

650 / 800

Length, m

59.0

Breadth, m

6.50

Draught, m

4.10 max

No of shafts

2

Machinery

2 Kobe Mitsubishi / Sulzer 6LDA25B diesel-generators, 2 Mitsubishi Electric electric motors

Power, h. p.

1350 / 1700

Max speed, kts

12 / 15

Fuel, t

diesel oil

Endurance, nm(kts)4000(10) /
Armament

3 - 533 TT (bow, 9)

Electronic equipment

ZPS-2 radar, JQS-2, JQO-3, JQO-4 sonars, ZLR-1 ECM suite

Complement

43

Diving depth operational, m

150



Standard scale images


<i>Hayashio </i>1965
Hayashio 1965


Graphics


<i>Hayashio </i>1962
Hayashio 1962


Project history

Constructed under the 1959 programme, these boats and their near-sisters, the Natsushio class, were small and limited in capability. They were air-conditioned and had good habitability and a large safety factor. They were modelled after the US Barracuda and were somewhat shorter and thicker than Oyashio. In order to reduce hull resistance, an effort was made to produce a perfect a perfect double hull, external framing was used in order to improve internal space. Attention was paid to improving underwater manoeuvrability, and a 'jostick' was installed for steering. The class used a water pressure system for launching torpedoes, thus eliminating the emission of air bubbles. The main storage batteries were water-cooled.

Modernizations

None.

Naval service

No significant events.