NAVYPEDIA

Photo

Sirena 1942

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
Ametista			OTO, Muggiano	9.1931	26.4.1933	4.1934	scuttled 12.9.1943
Anfitrite			CRDA, Monfalcone	7.1931	5.8.1933	3.1934	sunk 6.3.1941
Diamante			Tosi, taranto	5.1931	21.5.1933	11.1933	sunk 20.6.1940
Galatea			CRDA, Monfalcone	7.1931	5.10.1933	6.1934	discarded 2.1948
Naiade			CRDA, Monfalcone	5.1931	27.3.1933	11.1933	sunk 14.12.1940
Nereide			CRDA, Monfalcone	5.1931	25.5.1933	2.1934	sunk 13.7.1943
Ondina			CRDA, Monfalcone	7.1931	2.12.1933	9.1934	sunk 11.7.1942
Rubino			CNQ, Fiume	9.1931	29.3.1933	3.1934	sunk 29.6.1940
Sirena			CRDA, Monfalcone	5.1931	26.1.1933	10.1933	scuttled 9.9.1943
Smeraldo			Tosi, Taranto	5.1931	23.7.1933	11.1933	sunk about 16.9.1941
Topazio			CNQ, Fiume	9.1931	15.5.1933	4.1934	sunk 12.9.1943
Zaffiro			OTO, Muggiano	9.1931	28.6.1933	6.1934	sunk probably 9.6.1942

Technical data

Displacement standard, t	617 - 623
Displacement normal, t	680 / 837
Length, m	60.2
Breadth, m	6.45
Draught, m	4.70
No of shafts	2
Machinery	2 Fiat diesels / 2 CRDA electric motors Diamante, Rubino, Smeraldo, Topazio: 2 Tosi diesels / 2 Marelli electric motors
Power, h. p.	1200 / 800
Max speed, kts	14 / 7.7
Fuel, t	diesel oil 80
Endurance, nm(kts)	2280(12) / 72(4)
Armament	1 x 1 - 100/47 OTO 1931, 2 x 2 - 13.2/76, 6 - 533 TT (4 bow, 2 stern, 12)
Electronic equipment	hydrophone
Complement	45
Diving depth operational, m	80

Standard scale images

Graphics

Project history

Development of 600t Argonauta class, with a little larger displacement and changed hull form, become more shortly and more widely. The out-of-date 102mm/35 gun was replaced by more modern 100mm/47. In remaining they differed from predecessors a little.

Modernizations

None.

Naval service

Diamante was sunk 20.6.1940 near Tobruk by British submarine Parthian. Rubino was sunk 29.6.1940 in Ionian sea by British aircraft. Naiade was sunk 14.12.1940 near Bardia by DCs of British destroyers Hereward and Hyperion. Anfitrite was sunk 6.3.1941 off Crete by DCs and gunfire of British destroyer Greyhound. Zaffiro was lost in June, 1942, probably, sunk 9.6.1942 by British aircraft. Ondina was sunk 11.7.1942 near Beirut by South African armed whalers Protea and Southern Maid. Nereide was sunk 13.7.1943 near Augusta by DCs and gunfire of British destroyers Echo and Ilex. Smeraldo was lost in September, 1943 in Mediterranean sea by unknown reason. Sirena was scuttled by crew 9.9.1943 in La Spezia harbour. Topazio was erroneously sunk 12.9.1943 at SE coast of Sardinia by British aircraft. Ametista was scuttled by crew 12.9.1943 near Ancona.