NAVYPEDIA

Photo

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, t	622 - 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 equipment	hydrophone
Complement	45
Diving depth operational, m	80

Standard scale images

Graphics

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.