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fighting ships of the world

REGIA MARINA (ITALY)

SUBMARINES

MEDUSA small submarines (1911 - 1914)

Velella 1915

Name No Builder Laid down Launched Comp Fate
Argo   FIAT-San Giorgio, La Spezia 9/1910 14/1/1912 9/1912 discarded 9/1918
Fisalia   Orlando, Livorno 10/1910 25/2/1912 9/1912 discarded 9/1918
Jalea   FIAT-San Giorgio, La Spezia 3/1911 3/8/1913 9/1913 sunk 17/8/1915
Jantina   CNR, Muggiano 8/1910 20/11/1912 5/1913 discarded 9/1918
Medusa   FIAT-San Giorgio, La Spezia 5/1910 30/7/1911 6/1912 sunk 10/6/1915
Salpa   CNR, Muggiano 8/1910 14/5/1912 9/1912 discarded 9/1918
Velella   FIAT-San Giorgio, La Spezia 6/1910 25/5/1911 7/1912 discarded 9/1918
Zoea   Orlando, Livorno 10/1910 2/3/1913 7/1913 discarded 9/1918

   

Displacement standard, t

 

Displacement normal, t

248 - 252 / 305

Length, m

45.1

Breadth, m

4.20

Draught, m

2.90 - 3.00

No of shafts

2

Machinery

FIAT diesels / Savigliano electric motors

Velella: MAN diesels / Siemens electric motors

Power, h. p.

650 / 300

Max speed, kts

12 / 8

Fuel, t

diesel oil

Endurance, nm(kts) 1200(8) / 50(6)

Armament

2 - 450 TT (bow, 4)

Complement

21

Diving depth operational, m 40

Ship project history: Designed by Fiat-San Giorgio and Eng Lt Cdr Cesare Laurenti, they were the first Italian submarines to have diesel motors. These required long trials and time for adjustment. They were very good boats when submerged, with good manoeuvrability and stability.

Modernizations: None.

Naval service: Jalea sunk in the Gulf of Trieste by an Austrian mine 17/8/1915. Medusa sunk 10/6/1915 off Porto di Piave Vecchia (N Adriatic), torpedoed by the German submarine UB15, disguised as the Austrian U11. Zoea beached on 26 November 1917, by storm, at Rimini; salvaged by tug Ciclope and some torpedo-boats, and towed to Venice on 1 December for repairs. That month Venice N Yd began work to convert Argo into an assault submarine for forcing the Austrian main base of Pola, with the aid of frogmen for breaking the harbour barrages.

Medusa 1912

 

 

Ivan Gogin, 2014