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fighting ships of the world

REGIA MARINA / ITALIAN NAVY (ITALY)

SUBMARINES

SIRENA medium submarines (1933-1934)

Ametista 1940

Name 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
  

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

Fiat diesels / CRDA electric motors

Diamante, Rubino, Smeraldo, Topazio: Tosi diesels / 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

6 - 533 TT (4 bow, 2 stern, 12), 1 x 1 - 100/47 OTO 1931, 2 x 2 - 13.2/76

Complement

45

Diving depth operational, m 80

Ship 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 The out-of-date 102mm/35 gun was replaced by more modern 100mm/47.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.

Sirena 1942

Topazio 1941

 

Ivan Gogin, 2009-14