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fighting ships of the world

REGIA MARINA / ITALIAN NAVY (ITALY)

SUBMARINES

FLUTTO medium submarines (1942-1943)

Flutto 1943

Vortice 1954

Vortice 1963

Name No Builder Laid down Launched Comp Fate
Cernia   Tosi, Taranto 7/1943 --- --- cancelled 1/1944
Dentice   Tosi, Taranto 8/1943 --- --- cancelled 1/1944
Flutto   CRDA, Monfalcone 12/1941 19/11/1942 3/1943 sunk 11/7/1943
Gorgo   CRDA, Monfalcone 5/1941 31/1/1942 11/1942 sunk 21/5/1943
Grongo   OTO, Muggiano 4/1942 6/5/1943 --- scuttled incomplete 9/9/1943
Marea   CRDA, Monfalcone 12/1941 10/12/1942 5/1943 to Soviet Union 2/1949 (-41 <I-41>)
Murena   OTO, Muggiano 4/1942 11/4/1943 8/1943 scuttled 9/9/1943
Nautilo   CRDA, Monfalcone 1/1942 20/3/1943 7/1943 scuttled 10/9/1943
Sparide   OTO, Muggiano 4/1942 21/2/1943 8/1943 scuttled 9/9/1943
Spigola   Tosi, Taranto 6/1943 --- --- suspended 11/1943, BU 2/1948
Tritone   CRDA, Monfalcone 5/1941 3/1/1942 10/1942 sunk 19/1/1943
Vortice, 2/1948- PV1, 1/1952- Vortice 1953- S502 CRDA, Monfalcone 1/1942 23/2/1943 6/1943 discarded 8/1967
  

Displacement standard, t

746 - 750

Displacement normal, t

930 / 1093

Length, m

63.2

Breadth, m

6.98

Draught, m

4.87

No of shafts

2

Machinery

Fiat diesels / CRDA electric motors

Power, h. p.

2400 / 800

Max speed, kts

16 / 8

Fuel, t

diesel oil 52 (norm.)

Endurance, nm(kts) 5400(8) / 80(4)

Armament

6 - 533 TT (4 bow, 2 stern, 12), 1 x 1 - 100/47 OTO 1938, 2 x 1 - 20/70 Scotti-Isotta Fraschini 1939, (0 - 2) x 2 - 13.2/76

Grongo, Murena: 6 - 533 TT (4 bow, 2 stern, 12), 1 x 1 - 100/47 OTO 1938, 2 x 1 - 20/70 Scotti-Isotta Fraschini 1939, (0 - 2) x 2 - 13.2/76, 4 SLC human torpedoes

Complement

50

Diving depth operational, m 120

Ship project history: Development of Argo class with larger diving depth. At the expense of using of more powerful diesels speed was raised to 16kts. CT of the moderated size. 8 submarines from a series of 12 were commmissioned, one was scuttled incomplete and three were broken up on slipways. Partially double-hulled, diving time was 30sec.

Gorgo and Murena received with four cylindrical containers for transportation of human torpedoes, placed aside of CT. Unlike similar assignment in 600t submarines, main gun was remained.

Incomplete Cernia, Dentice and Spigola were broken up on slipways. Being in a high degree of readiness incomplete Grongo was scuttled 9/9/1943 at La Spezia, salvaged by Germans, renamed UIT20 but never completed and sunk by American bombers 4/9/1944. She was sunk by British aircraft at Genoa 4/9/1944.

Modernizations: 1951 - 1953, Vortice: - 1 x 1 - 100/47; 905/1068t, 2400/1350hp, 17/8kts, 12000(8)nm, artillery consisted of 1 x 1 - 20/70 Scotti-Isotta Fraschini 1939, 2 x 2 - 13.2/76

1950s, Vortice: - 1 x 1 - 20/70, 2 x 2 - 13.2/76

Naval service: Tritone was sunk 19/1/1943 NE of Alger by DCs and gunfire of British destroyer Antelope and Canadian corvette Port Arthur. Gorgo was sunk 21/5/1943 near Oran by American destroyer Nields. Flutto was sunk 11/7/1943 at Eastern coast of Sicily by British MTB640, MTB651 and MTB670.

Three submarines were scuttled by crews in September, 1943: Murena and Sparide at La Spezia and Nautilo at Venice. They were salvaged by Germans and renamed UIT16, UIT15 and UIT19 respectively. They were never commissioned by Kriegsmarine and sunk at Genoa by British aircraft 4/9/1944, 6/9/1944 and 9/1/1944 respectively. Nautilo was later raised and served in the Yugoslavian navy as Sava.

Vortice was remained in the navy list after war being officially classified as battery recharging station till January, 1952, when she was reclassified as submarine, modernized in 1951 - 1953 and commissioned again by Italian Navy.

Flutto 1943

Vortice 1959

 

Ivan Gogin, 2009-15