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FIGHTING SHIPS OF THE WORLD
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SUBMARINES
PERLA medium submarines (1936)


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Turchese

Ships


Name No Yard No Builder Laid down Launched Comp Fate
Ambra     OTO, Muggiano 8.1935 28.5.1936 8.1936 scuttled 9.9.1943
Berillo     CRDA, Monfalcone 9.1935 14.6.1936 8.1936 sunk 2.10.1940
Corallo     CRDA, Monfalcone 9.1935 2.8.1936 9.1936 sunk 13.12.1942
Diaspro     CRDA, Monfalcone 9.1935 5.7.1936 8.1936 discarded 2.1948
Gemma     CRDA, Monfalcone 9.1935 21.5.1936 7.1936 sunk 8.10.1940
Iride     OTO, Muggiano 9.1935 30.7.1936 11.1936 to Nationalist Spain 10.1937-1/1938 (González López), sunk 22.8.1940
Malacite     OTO, Muggiano 8.1935 15.7.1936 11.1936 sunk 9.2.1943
Onice     OTO, Muggiano 8.1935 15.6.1936 9.1936 to Nationalist Spain 10.1937-1/1938 (Aguilar Tablada), discarded 3.1947
Perla     CRDA, Monfalcone 8.1935 3.5.1936 7.1936 captured by Britain 9.7.1942 (Greek Ματρώζος [Matrozos])
Turchese     CRDA, Monfalcone 9.1935 19.7.1936 9.1936 discarded 2.1948


Technical data


Displacement standard, t622 - 626
Displacement normal, t

680 / 844

Length, m

60.2

Breadth, m

6.45

Draught, m

4.70

No of shafts

2

Machinery

Ambra, Malachite: 2 Tosi diesels / 2 Marelli electric motors

Berillo, Gemma, Iride, Onice, Perla: 2 Fiat diesels / 2 CRDA electric motors

Corallo, Diaspro, Turchese: 2 CRDA diesels / 2 CRDA electric motors

Power, h. p.

1200 / 800

Max speed, kts

14 / 7.5

Fuel, t

diesel oil 80

Endurance, nm(kts)2500(12) / 74(4)
Armament

1 x 1 - 100/47 OTO 1935, 2 x 1 - 13.2/76 or 2 x 2 - 13.2/76, 6 - 533 TT (4 bow, 2 stern, 12)

Electronic equipmenthydrophone
Complement

45

Diving depth operational, m80


Standard scale images


<i>Perla</i> 1940
Perla 1940
<i>Iride</i> 1940
Iride 1940


Graphics


<i>Turchese</i>
Turchese


Project history

Repetition of Sirena class with a little increased fuel stowage.

Iride and Ambra were converted for carrying of human torpedoes in 1940 and 1942 respectively. 100mm/47 gun has been thus removed, and on deck four (Iride) or three (Ambra) cylindrical transportation containers were installed.

Modernizations

1940, Iride: - 1 x 1 - 100/47; + 4 SLC human torpedoes.

1942, Ambra: - 1 x 1 - 100/47; + 3 SLC human torpedoes

Naval service

Iride 22.8.1940 was sunk by torpedo from air group of British aircraft carrier Eagle near Tobruk. Berillo was sunk 2.10.1940 in Mediterranean sea by DCs of British destroyers Hasty and Havock. Gemma was erroneously sunk 8.10.1940 in Aegean sea by Italian submarine Tricheco. Perla was captured 9.7.1942 near Beirut by British corvette Hyacinth, transferred to Greece and renamed Matrozos. Corallo was sunk 13.12.1942 near Bougie (Algeria) by gunfire of British sloop Enchantress. Malacite was sunk 9.2.1943 S of Sardinia by Dutch submarine Dolfijn. Ambra was scuttled by crew 9.9.1943 in La Spezia harbour.