Italian submarine Luigi Torelli

History
Italy
NameLuigi Torelli
NamesakeLuigi Torelli
BuilderOto (La Spezia, Italy)
Laid down15 February 1939
Launched6 January 1940
Commissioned15 May 1940
HomeportBETASOM, Bordeaux
FateSeized by the Japanese on 8 September 1943 and handed over to Nazi Germany on 10 September 1943
Service record as Luigi Torelli
Commanders:
Victories: 7 merchant ships sunk
(42,968 GRT)
Nazi Germany
NameUIT-25
Acquired10 September 1943
Commissioned6 December 1943
FateIncorporated into the Japanese Navy following the German surrender on 10 May 1945
Service record as UIT-25[1]
Part of:
Identification codes: M 32 441
Commanders:
  • Oblt.z.S. Werner Striegler[2]
  • 6 December 1943 – 13 February 1944
  • 16 February – 31 August 1944
  • Oblt.z.S. / Kptlt. Herbert Schrein (acting)[3]
  • September 1944 – February 1945
  • Oblt.z.S. Alfred Meier[4]
  • 25 November 1944 – February 1945
Operations: 3 patrols
Victories: None
Japan
NameI-504
Acquired10 May 1945
Commissioned14 July 1945
FateCaptured by the U.S. Navy and scuttled on 16 April 1946
Service record as I-504[5]
Commanders:
Operations: None
Victories: None
General characteristics
Class and typeMarconi-class submarine[6]
Displacement
  • 1,195 tons (standard)
  • 1,400t (full load)
Length251 ft (77 m)
Beam22.4 ft (6.8 m)
Draught15.6 ft (4.8 m)
Propulsion
  • (surfaced/submerged) diesel / electric, 2 shafts
  • 2,700 / 1,100 kW (3,600 / 1,500 hp)
Speed33.0 / 15.2 km/h (17.8 / 8.2 kn) (surfaced/submerged)
Complement57
Armament

Italian submarine Luigi Torelli was a Marconi-class submarine of the Italian navy during World War II. The vessel operated in the Atlantic from September 1940 until mid-1943, then was sent to the Far East. After Italy's surrender in 1943, the Luigi Torelli was taken over by Nazi Germany's Kriegsmarine, then, in the waning months of the war, the Japanese Imperial Navy. It was one of only two ships to serve in all three major Axis navies, the other being the Italian submarine Comandante Cappellini.

  1. ^ Helgason, Guðmundur. "Foreign U-boats UIT-25". German U-boats of WWII - uboat.net. Retrieved 30 April 2015.
  2. ^ Helgason, Guðmundur. "Werner Striegler". Uboat.net. Retrieved 30 April 2016.
  3. ^ Helgason, Guðmundur. "Herbert Schrein". Uboat.net. Retrieved 30 April 2016.
  4. ^ Helgason, Guðmundur. "Alfred Meier". Uboat.net. Retrieved 30 April 2016.
  5. ^ "I-504". IJN Submarine Service – Ijnsubsite.info. Retrieved 3 June 2023.
  6. ^ Bagnasco p161


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