home

fighting ships of the world

JAPAN MARITIME SELF-DEFENCE FORCE (JAPAN)

SUBMARINES

NATSUSHIO submarines (1963 - 1964)

Natsushio 1965

Name No Yard No Builder Laid down Launched Comp Fate
なつしお <Natsushio> SS523   Shin Mitsubishi Jyuko, Kobe 5/12/1961 18/9/1962 29/6/1963 discarded 3/1978
ふゆしお <Fuyushio> SS524   Kawasaki Jyuko, Kobe 6/12/1961 4/12/1962 17/9/1963 discarded 6/1980

 

Displacement standard, t

 

Displacement normal, t

690 / 850

Length, m

61.0

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)

Sensors

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

Complement

43

Diving depth operational, m

150

Ship project history: Constructed under the 1961 programme, these boats 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.

Natsushio 1973

Ivan Gogin, 2016