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German submarineU-325

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History
Nazi Germany
NameU-325
Ordered16 July 1942
BuilderFlender Werke,Lübeck
Yard number325
Laid down13 April 1943
Launched25 March 1944
Commissioned6 May 1944
FateSunk on 30 April 1945[1]
General characteristics
Class and typeType VIIC/41submarine
Displacement
Length
Beam
  • 6.20 m (20 ft 4 in) o/a
  • 4.70 m (15 ft 5 in) pressure hull
Height9.60 m (31 ft 6 in)
Draught4.74 m (15 ft 7 in)
Installed power
  • 2,800–3,200 PS (2,100–2,400 kW; 2,800–3,200 bhp) (diesels)
  • 750 PS (550 kW; 740 shp) (electric)
Propulsion
Speed
  • 17.7 knots (32.8 km/h; 20.4 mph) surfaced
  • 7.6 knots (14.1 km/h; 8.7 mph) submerged
Range
  • 8,500nmi(15,700km;9,800mi) at 10 knots (19 km/h; 12 mph) surfaced
  • 80 nmi (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth
  • 250 m (820 ft)
  • Crush depth:275–325 m (902–1,066 ft)
Complement4 officers, 40–56 enlisted
Armament
Service record[1][2]
Part of:
Identification codes: M 14 343
Commanders:
  • Oblt.z.S.Erwin Dohrn
  • 6 May 1944 – 30 April 1945
Operations:
  • 3 patrols:
  • 1st patrol:
  • 1 – 4 December 1944
  • 2nd patrol:
  • 9 December 1944 – 14 February 1945
  • 3rd patrol:
  • 20 March – 30 April 1945
Victories: None

German submarineU-325was aType VIIC/41U-boatofNazi Germany'sKriegsmarineduringWorld War II.

The submarine waslaid downon 13 April 1943 at theFlender WerkeatLübeck,launchedon 25 March 1944, andcommissionedon 6 May 1944 under the command ofOberleutnant zur SeeErwin Dohrn.[1]

Design

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German Type VIIC/41 submarineswere preceded by the heavierType VIIC submarines.U-325had a displacement of 759 tonnes (747 long tons) when at the surface and 860 tonnes (850 long tons) while submerged.[3]She had a total length of 67.10 m (220 ft 2 in), apressure hulllength of 50.50 m (165 ft 8 in), abeamof 6.20 m (20 ft 4 in), a height of 9.60 m (31 ft 6 in), and adraughtof 4.74 m (15 ft 7 in). The submarine was powered by twoGermaniawerftF46 four-stroke, six-cylindersuperchargeddiesel enginesproducing a total of 2,800 to 3,200 metric horsepower (2,060 to 2,350 kW; 2,760 to 3,160 shp) for use while surfaced, twoGarbe, Lahmeyer & Co.RP 137/cdouble-acting electric motorsproducing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged. She had two shafts and two 1.23 m (4 ft)propellers.The boat was capable of operating at depths of up to 230 metres (750 ft).[3]

The submarine had a maximum surface speed of 17.7 knots (32.8 km/h; 20.4 mph) and a maximum submerged speed of 7.6 knots (14.1 km/h; 8.7 mph).[3]When submerged, the boat could operate for 80 nautical miles (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph).U-325was fitted with five 53.3 cm (21 in)torpedo tubes(four fitted at the bow and one at the stern), fourteentorpedoes,one8.8 cm (3.46 in) SK C/35 naval gun,(220 rounds), one3.7 cm (1.5 in) Flak M42and two2 cm (0.79 in) C/30anti-aircraft guns. The boat had acomplementof between forty-four and sixty.[3]

Service history

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U-325's first patrol took her fromKielin Germany toHorten Naval Basein Norway, between 1 and 4 December 1944.[4]She then sailed from Horten on 9 December 1944, and around theBritish Islesinto the westernEnglish Channel,before returning toTrondheimon 14 February 1945, although she recorded no successes.[5]

Loss

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U-325sailed fromTrondheimon 20 March 1945 for her third and final patrol and was ordered to return to the waters offLands End.Even though her last report was received on 7 April,[1]whenGermany surrenderedon 8 May 1945U-325was still considered operational by theU-boat High Command.However it soon became apparent that the submarine was lost.

The British initially attributed the loss ofU-325to adepth chargeattack by the destroyersHMSHesperusandHavelockon 30 April 1945. However, after later analysis of German records that submarine was re-identified asU-242,andU-325's fate was officially classified as "unknown".[6]

Discovery

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The wreck ofU-325was finally discovered byScuba diversin 2006, 17 kilometres (11 mi) South ofLizard Pointat position49°48′17″N5°12′23″W/ 49.804717°N 5.206383°W/49.804717; -5.206383.To counter the increasing number of schnorkel-fitted U-boats in UK coastal waters, theFirst Sea Lordordered a heavy anti-U-boat mining programme to be undertaken in theWestern Approaches,Plymouthand Portsmouth Commands on 15 January 1945. By April 1945, nine different fields (Serial B1, part 1 to 4, Serial B2, part 1 to 4, and Serial B3, part 1), comprising 900 Mk XVII/XVII(8)mineswere laid off Lizard Head.U-325struck a mine in field B3, part 1. This field was laid by the coastalminelayerHMSPloverescorted by theminesweepersHMSlfracombeandShippigan.[7]

See also

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References

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  1. ^abcdHelgason, Guðmundur."The Type VIIC/41 boat U-325".German U-boats of WWII - uboat.net.Retrieved4 January2010.
  2. ^Helgason, Guðmundur."War Patrols by German U-boat U-325".German U-boats of WWII - uboat.net.Retrieved4 January2010.
  3. ^abcdGröner 1991,pp. 43–46.
  4. ^Helgason, Guðmundur."Patrol of U-boat U-325 from 1 Dec 1944 to 4 Dec 1944".German U-boats of WWII - uboat.net.Retrieved4 January2010.
  5. ^Helgason, Guðmundur."Patrol of U-boat U-325 from 9 Dec 1944 to 14 Feb 1945".U-boat patrols - uboat.net.Retrieved4 January2010.
  6. ^"War Mystery Solved".cix.co.uk.Retrieved4 January2010.
  7. ^Niestlé, A. 2010. The 'Atlas' Survey Zone: Deep-sea Archaeology & U-boat Loss Reassessments.PDFArchived29 April 2012 at theWayback Machine

Bibliography

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  • Busch, Rainer; Röll, Hans-Joachim (1999).German U-boat commanders of World War II: a biographical dictionary.Translated by Brooks, Geoffrey. London, Annapolis, Md: Greenhill Books, Naval Institute Press.ISBN1-55750-186-6.
  • Busch, Rainer; Röll, Hans-Joachim (1999).Der U-Boot-Krieg, 1939-1945: Deutsche U-Boot-Verluste von September 1939 bis Mai 1945[German U-boat losses from September 1939 to May 1945] (in German). Vol. IV. Hamburg, Berlin, Bonn: Mittler.ISBN3-8132-0514-2.
  • Gröner, Erich; Jung, Dieter; Maass, Martin (1991).U-boats and Mine Warfare Vessels.German Warships 1815–1945. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press.ISBN0-85177-593-4.
  • Kemp, Paul (1999).U-Boats Destroyed - German Submarine Losses in the World Wars.London: Arms & Armour.ISBN1-85409-515-3.
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