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fighting ships of the world

REGIA MARINA (ITALY)

SUBMARINES

FOCA small submarine (1909)

Foca 1909

Name No Builder Laid down Launched Comp Fate
Foca   FIAT-San Giorgio, La Spezia 4/1907 8/9/1908 2/1909 discarded 9/1918

   

Displacement standard, t

 

Displacement normal, t

185 / 280

Length, m

42.5

Breadth, m

4.20

Draught, m

2.60

No of shafts

3

Machinery

3 FIAT petrol engines / 2 electric motors

Power, h. p.

800 / 160

Max speed, kts

16 / 6

Fuel, t

petrol

Endurance, nm(kts) 350(10) / 45(4)

Armament

2 - 450 TT (bow, 4)

Complement

17

Diving depth operational, m 35

Ship project history: Designed by Fiat-San Giorgio Yards, the Foca was a development of the Glauco class and was the only Italian submarine provided with 3 shafts and 3 propellers, operated by three sets of Fiat petrol motors for a total of 800bhp. On 26 April 1909 an internal petrol explosion set fire to her fuel, in Naples harbour so it was necessary to sink the boat. Refloated and towed to La Spezia, she was repaired, and the central motor with its shaft and propeller were removed. After this accident, the Italian Navy gave up building petrol-powered submarines.

Modernizations: (1909-1910): central shaft was removed; 600 / 160hp, 12 / 6kts.

Naval service: No significant events.

Foca

 

 

Ivan Gogin, 2014