|Name||No||Yard 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
|No of shafts||
2 Fiat diesels / 2 CRDA electric motors
|Power, h. p.||
3000 / 1300
|Max speed, kts||
15 / 8
|Endurance, nm(kts)||5650(8) / 100(3)|
1 x 1 - 102/35 Schneider-Armstrong 1914-15, 2 x 1 - 13.2/76, 8 - 533 TT (4 bow, 4 stern, 12),
|Diving depth operational, m||90|
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.
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.