NAVYPEDIA

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Ships

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

Technical data

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	2 Fiat diesels / 2 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	1 x 1 - 102/35 Schneider-Armstrong 1914-15, 2 x 1 - 13.2/76, 8 - 533 TT (4 bow, 4 stern, 12),
Electronic equipment	hydophone
Complement	53
Diving depth operational, m	90

Standard scale images

Graphics

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.