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fighting ships of the world

REGIA MARINA / ITALIAN NAVY (ITALY)

SUBMARINES

SQUALO medium submarines (1930-1931)

Delfino 1940

Name No Builder Laid down Launched Comp Fate
Delfino   CRDA, Monfalcone 10/1928 27/4/1930 6/1931 collision 23/3/1943
Narvalo   CRDA, Monfalcone 10/1928 15/3/1930 12/1930 scuttled 14/1/1943
Squalo   CRDA, Monfalcone 10/1928 15/1/1930 10/1930 discarded 2/1948
Tricheco   CRDA, Monfalcone 11/1928 11/9/1930 6/1931 sunk 18/3/1942
  

Displacement standard, t

857

Displacement normal, t

920 / 1125

Length, m

69.8

Breadth, m

7.21

Draught, m

5.19

No of shafts

2

Machinery

Fiat diesels / CRDA electric motors

Power, h. p.

3000 / 1300

Max speed, kts

15 / 8

Fuel, t

diesel oil

Endurance, nm(kts) 5650(8) / 100(3)

Armament

8 - 533 TT (4 bow, 4 stern, 12), 1 x 1 - 102/35 Schneider-Armstrong 1914-15, 2 x 1 - 13.2/76

Complement

53

Diving depth operational, m 90

Ship project history: Development of Bandiera. Differences from a prototype are insignificant, having basically technological character. As well as Bandiera, originally they suffered from insufficient stability at diving/surfacing, for correction soon after completion they were arranged by external bulges. Also the fore end form was changed for seaworthiness improvement.

In days of war the sizes of CT on Squalo (and, probably, on others) were moderated.

Modernizations: None.

Naval service: Tricheco was sunk 18/3/1942 near Brindisi by British submarine Upholder. Narvalo was scuttled by crew 14/1/1943 near Tripoli after attack of British destroyer Pakenham and escort destroyer Hursley. Delfino was sunk 23/3/1943 near Taranto after collision with pilot vessel.

 

 

Ivan Gogin, 2009-14