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fighting ships of the world

IMPERIAL JAPANESE NAVY (JAPAN)

SUBMARINES

"Fiat - Laurenti 1" and "Fiat - Laurenti 2" 2 class submarines (1920-1922)

21-go 1923

31-go 1923

Name No Yard No Builder Laid down Launched Comp Fate
Fiat-Laurenti 1
第18号艦 <18-go>, 11/1924- 1 <RO1>     Kawasaki, Kobe 11/1918 28/7/1919 3/1920 stricken 1930
第21号艦 <21-go>, 11/1924- 2 <RO2>     Kawasaki, Kobe 11/1918 22/11/1919 4/1920 stricken 1930
Fiat-Laurenti 2
第31号艦 <31-go>, 11/1924- 3 <RO3>     Kawasaki, Kobe 1/1920 10/3/1921 7/1922 stricken 1930
第32号艦 <32-go>, 11/1924- 4 <RO4>     Kawasaki, Kobe 1/1920 22/6/1921 5/1922 stricken 1930
第33号艦 <33-go>, 11/1924- 5 <RO5>     Kawasaki, Kobe 1/1920 17/9/1921 3/1922 stricken 1930

  

Displacement standard, t

 

Displacement normal, t

689 / 1047

Length, m

60.5 pp 65.6 oa

Breadth, m

6.10

Draught, m

18-go, 21-go: 4.20

31-33-go: 4.10

No of shafts

2

Machinery

2 FIAT diesels / 2 Savigliano electric motors

Power, h. p.

18-go, 21-go: 2800 / 1200

31-33-go: 2600 / 1200

Max speed, kts

18-go, 21-go: 13 / 8

31-33-go: 14 / 8

Fuel, t

diesel oil 58

Endurance, nm(kts) 3500(10) / 75(4)
Armament

1 x 1 - 7.7/87, 5 - 450 TT (3 bow, 2 stern, 8)

Complement

43

Diving depth operational, m

40

Ship project history: Fiat-Laurenti type. Built in Japan under drawings of Fiat-Laurenti. Ordered under the 1915-1916 programme (1st group) and 1918 programme (2nd group). Single-hulled.

Modernizations: 1923, all: - 1 x 1 - 7.7/87; + 1 x 1 - 76/23 41-shiki

Naval service: No significant events.

RO2

RO3

Ivan Gogin, 2008-14