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fighting ships of the world

REGIA MARINA / ITALIAN NAVY (ITALY)

SUBMARINES

VETTOR PISANI medium submarines (1929)

Giovanni Bausan 1940

Name No Builder Laid down Launched Comp Fate
Giovanni Bausan   CNT, Monfalcone 1/1926 24/3/1928 9/1929 floating oil depot 4/1942
Marcantonio Colonna   CNT, Monfalcone 12/1925 26/12/1927 7/1929 hulk 4/1942
Des Geneys   CNT, Monfalcone 2/1926 14/11/1928 10/1929 floating charging station 4/1942
Vettor Pisani   CNT, Monfalcone 11/1925 24/11/1927 6/1929 discarded 3/1947
  

Displacement standard, t

808

Displacement normal, t

866 / 1040

Length, m

68.2

Breadth, m

6.09

Draught, m

4.93

No of shafts

2

Machinery

Tosi diesels / CGE electric motors

Power, h. p.

3000 / 1100

Max speed, kts

17.3 / 8.8

Fuel, t

diesel oil 70

Endurance, nm(kts) 5000(8) / 70(4)

Armament

6 - 533 TT (4 bow, 2 stern, 9), 1 x 1 - 102/35 Schneider-Armstrong 1914-15, 2 x 1 - 13.2/76

Complement

48

Diving depth operational, m 90

Ship project history: Project was developed by builder under the same technical requirements, as Mameli class. Single-hulled. They exceeded Mameli class on endurance, but, as well as the latter, had insufficient stability. Soon after commission they received external bulges: the stability was raised, but speed has fallen from 17.3/8.8 to 15/8.2kts.

Modernizations: 1930, all: bulges were fitted, max speed was 15 / 8.2 kts.

Naval service: To the war beginning they were considered become outdated, and since 1942 three boats were disarmed  and converted to battery recharging stations and fuel oil hulks.

Vettor Pisani 1943

 

Ivan Gogin, 2009-14