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German submarine U-166 (1941)

History
Nazi Germany
Name: U-166
Ordered: 25 September 1939
Builder: Seebeckwerft, Wesermünde
Yard number: 705
Laid down: 6 December 1940
Launched: 1 November 1941[1]
Commissioned: 23 March 1942[1]
Fate: Sunk, 30 July 1942 by the United States Navy patrol craft PC-566
General characteristics
Class & type: Type IXC submarine
Displacement:
  • 1,120 t (1,100 long tons) surfaced
  • 1,232 t (1,213 long tons) submerged
Length:
Beam:
  • 6.76 m (22 ft 2 in) o/a
  • 4.40 m (14 ft 5 in) pressure hull
Height: 9.60 m (31 ft 6 in)
Draft: 4.70 m (15 ft 5 in)
Installed power:
  • 4,400 PS (3,200 kW; 4,300 bhp) (diesels)
  • 1,000 PS (740 kW; 990 shp) (electric)
Propulsion:
Range:
  • 13,450 nmi (24,910 km; 15,480 mi) at 10 knots (19 km/h; 12 mph) surfaced
  • 64 nmi (119 km; 74 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth: 230 m (750 ft)1
Complement: 4 officers, 44 enlisted
Armament:
Service record[2][3]
Part of:
Commanders:
  • Oblt.z.S. Hans-Günther Kuhlmann
  • 23 March 1942 – 30 July 1942
Operations:
  • 1st patrol: 1–10 June 1942
  • 2nd patrol: 17 June – 30 July 1942
Victories: Four commercial ships sunk (7,593 GRT)

German submarine U-166 was a Type IXC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 6 December 1940 at the Seebeckwerft (part of Deutsche Schiff- und Maschinenbau AG, Deschimag) at Wesermünde (modern Bremerhaven) as yard number 705, launched on 1 November 1941 and commissioned on 23 March 1942 under the command of Oberleutnant zur See Hans-Günther Kuhlmann. After training with the 4th U-boat Flotilla, U-166 was transferred to the 10th U-boat Flotilla for front-line service on 1 June 1942. The U-boat sailed on only two war patrols and sank four ships totalling 7,593 gross register tons (GRT).[2] She was sunk on 30 July 1942 in Gulf of Mexico.[4]

Contents

  • Design 1
  • Service history 2
    • 1st patrol 2.1
    • 2nd patrol 2.2
  • Summary of raiding history 3
  • Fate 4
  • Wreckage located in 2001 5
  • References 6
  • Bibliography 7
  • External links 8

Design

German Type IXC submariness were slightly larger than the original Type IXBs. U-166 had a displacement of 1,120 tonnes (1,100 long tons) when at the surface and 1,232 tonnes (1,213 long tons) while submerged.[5] The U-boat had a total length of 76.76 m (251 ft 10 in), a pressure hull length of 58.75 m (192 ft 9 in), a beam of 6.76 m (22 ft 2 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.70 m (15 ft 5 in). The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines producing a total of 4,400 metric horsepower (3,240 kW; 4,340 shp) for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of 1,000 shaft horsepower (1,010 PS; 750 kW) for use while submerged. She had two shafts and two 1.92 m (6 ft) propellers. The boat was capable of operating at depths of up to 230 metres (750 ft).[6]

The submarine had a maximum surface speed of 18.3 knots (33.9 km/h; 21.1 mph) and a maximum submerged speed of 7.3 knots (13.5 km/h; 8.4 mph).[5] When submerged, it could operate for 63 nautical miles (117 km; 72 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 13,450 nautical miles (24,910 km; 15,480 mi) at 10 knots (19 km/h; 12 mph). U-166 was fitted with six 53.3 cm (21 in) torpedo tubes (four fitted at the bow and two at the stern), 22 torpedoes, one 10.5 cm (4.13 in) SK C/32 naval gun, 180 rounds, and a 3.7 cm (1.5 in) as well as a 2 cm (0.79 in) anti-aircraft gun. The boat had a complement of forty-eight.[5]

Service history

1st patrol

U-166 first sailed from Kiel to Kristiansand, Norway, on 30–31 May 1942.[3] The U-boat sailed on her first combat patrol, from Kristiansand on 1 June 1942, around the British Isles, and arrived at Lorient, France, ten days later on 10 June.[7]

2nd patrol

U-166 departed from Lorient on 17 June 1942, sailed across the Atlantic and into the Gulf of Mexico[8] and is credited with the following "kills":[9]

Summary of raiding history

Date of Action Ship Name Ship Type Nationality Tonnage (GRT) Position Deaths
11 July 1942 Carmen Sailing Vessel  Dominican Republic 84 1
13 July 1942 Oneida Steam Merchant  United States 2,309 6
16 July 1942 Gertrude Motor Fishing Vessel  United States 16 0
30 July 1942 Robert E. Lee Steam Passenger Ship  United States 5,184 25

Fate

Robert E. Lee was under escort from the United States Navy patrol craft PC-566[10] approximately 45 miles (72 km) south of the Mississippi River Delta when she was torpedoed by U-166 on 30 July 1942. PC-566 immediately attacked and claimed to have sunk the U-boat with depth charges.

On 1 August 1942, a United States Coast Guard J4F-1 Widgeon amphibious aircraft spotted a U-boat approximately 100 miles (160 km) off the coast of Houma, Louisiana. The aircraft attacked and it appeared that the U-boat was hit in the attack. U-166 was reported missing in action on 30 July 1942, which coincided with the American aircraft's attack on "a U-Boat", leading to the aircraft being credited with the sinking of U-166, with the loss of all 52 crew members. Both aircraft crewmen were decorated for the action.[9][11][12]

Wreckage located in 2001

A gun on the deck of the sunken U-166

However, in 2001, when the wreck of Robert E. Lee was located in more than 5,000 feet (1,500 m) of water, the wreck of U-166 was also located, less than two miles from where it had attacked her. An archaeological survey of the seafloor prior to construction of a natural gas pipeline led to the discoveries by C & C Marine archaeologists Robert A. Church and Daniel J. Warren. The sonar contacts consisted of two large sections lying approximately 500 feet apart at either end of a debris field that indicated the presence of a U-boat.[13] Petroleum companies operating in the Gulf of Mexico’s outer continental shelf are required to provide sonar data in areas that have archaeological potential. BP and Shell sponsored additional fieldwork to record detailed images, including a gun on the deck aft of the submarine’s conning tower.[14] On investigation, it was discovered that another U-boat, U-171, also operating in the Gulf of Mexico, had reported coming under attack from an American aircraft on 1 August 1942, with little damage. Therefore, the credit for the sinking of U-166 should have gone to PC-566.[11][15][16] Charles "C.J." Christ, from Houma, spent most of his life searching for U-166 and was involved in the final identification of the U-boat.[17]

The site where U-166 lies, at has been designated a war grave because its crew of 52 is entombed there. It is protected against any future attempts to salvage it.[18]

Oceanographer and National Geographic Explorer-in-Residence Dr. Robert Ballard explored and mapped the wreck in the summer of 2014 with remotely operated vehicles and determined that the bow of the submarine was destroyed, apparently by a depth charge which caused an internal explosion of the submarine's own torpedoes.[19][20] On 16 December 2014, the Secretary of the Navy Ray Mabus posthumously awarded the captain of PC 566, then-LCDR Herbert G. Claudius, USNR (later CDR, then CAPT USN[21]), the Legion of Merit with a Combat "V" device for heroism in battle and credited him with the sinking of the U-boat. "Seventy years later, we now know that [Claudius's] report after the action was absolutely correct," he said. "[Claudius's ship] did sink that U-boat, and it's never too late to set the record straight." [22][23]

References

  • One of the foremost authorities on the subject is Charles "C.J." Christ, from Houma,[24] who spent most of his life searching for U-166. His personal account about his search and the final locating and identification of the U-Boat can be found in a local newspaper, The Houma Courier: C.J. Christ "WAR IN THE GULF: German submarine, U-166, found in the Gulf of Mexico" (The article can be found online as reprint by another local newspaper, The Daily Comet).[25]
  1. ^ a b Kemp 1999, p. 85.
  2. ^ a b Helgason, Guðmundur. "The Type IXC boat U-166". German U-boats of WWII - uboat.net. Retrieved 22 February 2010. 
  3. ^ a b Helgason, Guðmundur. "War Patrols by German U-boat U-166". German U-boats of WWII - uboat.net. Retrieved 22 February 2010. 
  4. ^ "Historic Shipwrecks in the Gulf of Mexico". gomr.mms.gov. Retrieved 22 February 2010. 
  5. ^ a b c Gröner 1985, p. 105.
  6. ^ Gröner 1985, pp. 105-106.
  7. ^ Helgason, Guðmundur. "Patrol of U-boat U-166 from 1 June 1942 to 10 June 1942 - U-boat patrols - uboat.net". German U-boats of WWII - uboat.net. Retrieved 22 February 2010. 
  8. ^ Helgason, Guðmundur. "Patrol of U-boat U-166 from 17 Jun 1942 to 30 Jul 1942". German U-boats of WWII - uboat.net. Retrieved 22 February 2010. 
  9. ^ a b "U-Boat Operations". ubootwaffe.net. Retrieved 2007-07-08. 
  10. ^ http://www.navsource.org/archives/12/010566.htm
  11. ^ a b "U-166".  
  12. ^ "173-FOOT STEEL-HULL PATROL CRAFT (PC, 461 - CLASS)". Patrol Craft Sailors Association. Retrieved 2007-07-08. 
  13. ^ Daniel J. Warren, Robert A. Church. "The Discovery of U - 166 : Rewriting History with New Technology" (PDF). Offshore Technology Conference. Retrieved 31 July 2015. 
  14. ^ "Petroleum Survey finds U-166". American Oil & Gas Historical Society. 
  15. ^ http://www.underwaterarchaeology.org/newsletter_page%203.htm
  16. ^ "Contents". World War II in the Gulf of Mexico. Retrieved 2007-07-08. 
  17. ^ "WAR IN THE GULF: German submarine, U-166, found in the Gulf of Mexico".  
  18. ^ "U-Boat Crew Lists". ubootwaffe.net. Retrieved 2007-07-08. 
  19. ^ Boyle, Alan (6 May 2015). "How an Expedition to Study a Sunken Nazi U-Boat Rescued a Reputation". NBC News. Retrieved 7 May 2015. 
  20. ^ "NOVA: Nazi Attack on America". Public Broadcasting System. 6 May 2015. Retrieved 13 June 2015. 
  21. ^ http://ussfloydbparks.org/claudius.html
  22. ^ Howard, Brian Clark, "72 Years Later, Snubbed Captain Credited With Downing German U-Boat", National Geographic, Washington, D.C., 17 December 2014.
  23. ^ Brian Clark Howard. "72 Years Later, Snubbed Captain Credited With Downing German U-Boat". National Geographic. 
  24. ^ "History of the Offshore Oil and Gas Industry in Southern Louisiana" (PDF). OCS Study MMS 2008-042 Volume 1,. p. 42. Retrieved 2013-01-23. 
  25. ^ "WAR IN THE GULF: German submarine, U-166, found in the Gulf of Mexico". The Daily Comet. Retrieved 2013-01-23. 

Bibliography

  • Busch, Rainer; Röll, Hans-Joachim (1999). Deutsche U-Boot-Verluste von September 1939 bis Mai 1945. Der U-Boot-Krieg (in German) IV (Hamburg, Berlin, Bonn: Mittler).  
  • Gröner, Erich (1985). U-Boote, Hilfskreuzer, Minenschiffe, Netzleger, Sperrbrecher. Die deutschen Kriegsschiffe 1815–1945 (in German) III (Koblenz:  
  • Kemp, Paul (1999). U-Boats Destroyed - German Submarine Losses in the World Wars. London: Arms & Armour.  

External links

  • Helgason, Guðmundur. "The Type IX boat U-166". German U-boats of WWII - uboat.net. Retrieved 7 December 2014. 
  • Hofmann, Markus. "U 166". Deutsche U-Boote 1935–1945 - u-boot-archiv.de (in German). Retrieved 7 December 2014. 
  • : The Gulf of Mexico's Lost U-BoatU-166The Story of
  • Robert E. LeePhotograph and sonar image of the
  • The U-166 - NOAA
  • WWII German UBoats
  • WWII Gulf of Mexico Shipwreck Survey Expedition 2004 - NOAA
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