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German submarine U-99 (1940)

April 26, 2024

For other ships with the same name, see German submarine U-99.

German submarine U-99 was a Type VIIB U-boat of Nazi Germany's Kriegsmarine during World War II. She was laid down on 31 March 1939 at the Friedrich Krupp Germaniawerft in Kiel as yard number 593. She was launched on 12 March 1940 under the command of Korvettenkapitän Otto Kretschmer and was assigned to the 7th U-boat Flotilla based in Kiel and later in St Nazaire.

U-52, a typical Type VIIB boat
History
Nazi Germany
NameU-99
Ordered15 December 1937
BuilderGermaniawerft, Kiel
Yard number593
Laid down31 March 1939
Launched12 March 1940
Commissioned18 April 1940
FateSunk on 17 March 1941, by HMS Walker southeast of Iceland. Three dead and 40 survivors[1][2]
General characteristics
Class and typeType VIIB submarine
Displacement
Length
Beam
  • 6.20 m (20 ft 4 in) o/a
  • 4.70 m (15 ft 5 in) pressure hull
Height9.50 m (31 ft 2 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
  • 17.9 knots (33.2 km/h; 20.6 mph) surfaced
  • 8 knots (15 km/h; 9.2 mph) submerged
Range
  • 9,400 nmi (17,400 km; 10,800 mi) at 10 knots (19 km/h; 12 mph) surfaced
  • 90 nmi (170 km; 100 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth
  • 220 m (720 ft)
  • Crush depth: 230–250 m (750–820 ft)
Complement4 officers, 40–56 enlisted
Sensors and
processing systems		Gruppenhorchgerät
Armament
Service record
Part of:
Identification codes: M 17 046
Commanders:
Operations:
  • 8 patrols:
  • 1st patrol:
  • 18–25 June 1940
  • 2nd patrol:
  • 27 June – 21 July 1940
  • 3rd patrol:
  • 25 July – 5 August 1940
  • 4th patrol:
  • 4 – 25 September 1940
  • 5th patrol:
  • 13 – 22 October 1940
  • 6th patrol:
  • 30 October – 8 November 1940
  • 7th patrol:
  • 27 November – 12 December 1940
  • 8th patrol:
  • 22 February – 17 March 1941
Victories:
  • 35 merchant ships sunk
    (198,218 GRT)
  • 3 auxiliary warships sunk
    (46,440 GRT)
  • 5 merchant ships damaged
    (37,965 GRT)
  • 1 merchant ship taken as prize
    (2,136 GRT)

U-99 was one of the most successful German U-boats in the war, sinking 38 ships for a total tonnage of 244,658 gross register tons (GRT) of Allied shipping in eight patrols. She damaged five more ships and took one vessel as a prize. U-99 was sunk on 17 March 1941 by British destroyer HMS Walker while attacking convoy HX 112.

Design edit

German Type VIIB submarines were preceded by the shorter Type VIIA submarines. U-99 had a displacement of 753 tonnes (741 long tons) when at the surface and 857 tonnes (843 long tons) while submerged.[3] She had a total length of 66.50 m (218 ft 2 in), a pressure hull length of 48.80 m (160 ft 1 in), a beam of 6.20 m (20 ft 4 in), a height of 9.50 m (31 ft 2 in), and a draught of 4.74 m (15 ft 7 in). The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing 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, two BBC GG UB 720/8 double-acting electric motors producing 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 17.9 knots (33.2 km/h; 20.6 mph) and a maximum submerged speed of 8 knots (15 km/h; 9.2 mph).[3] When submerged, the boat could operate for 90 nautical miles (170 km; 100 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 8,700 nautical miles (16,100 km; 10,000 mi) at 10 knots (19 km/h; 12 mph). U-99 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm (3.46 in) SK C/35 naval gun, 220 rounds, and one 2 cm (0.79 in) anti-aircraft gun The boat had a complement of between forty-four and sixty.[3]

Service history edit

From April to June 1940, the crew of U-99 were under training, based at Kiel and St. Nazaire.

First patrol edit

On 18 June, U-99 departed Kiel for operations in the North Sea west of Norway. An Arado Ar-196 seaplane from the German battlecruiser Scharnhorst attacked her, having mistaken her for a British submarine. Two days later, U-99 was attacked by two aircraft; minor damage was inflicted.[4] She returned to Kiel on 25 June.

Second patrol edit

U-99 departed Wilhelmshaven on 27 June to patrol southwest of Ireland. On 29 June, she was attacked by British aircraft. A crash dive was carried out with the result that the boat hit the seabed, causing some damage which was able to be repaired.[4] On this patrol U-99 sank six ships and captured one, the Estonian 2,136 GRT cargo steamship Merisaar, carrying a load of timber from New Orleans, to Cork, Ireland.)[5] An attack on the 5,360 GRT Manistee was called off on 7 July, when the defensively equipped merchant ship returned fire.[6] On 8 July, over 100 depth charges were dropped by the escorts of Convoy HX 53, but U-99 escaped undamaged.[4] The patrol ended on 21 July.

 
Painting of Merisaar's lifeboat approaching U-99 on 12 July 1940
Date Ship Nationality Tonnage[Note 1] Fate
5 July 1940 Magog †   Canada 2,053 Sunk
7 July 1940 Bissen   Sweden 1,514 Sunk
Manistee   United Kingdom 5,360 Escaped
Sea Glory   United Kingdom 1,964 Sunk
8 July 1940 Humber Arm ‡   United Kingdom 5,758 Sunk
12 July 1940 Ia   Greece 4,860 Sunk
Merisaar*   Estonia 2,136 Captured as prize
18 July 1940 Woodbury   United Kingdom 4,434 Sunk

† Convoy HX 52, ‡ Convoy HX 53, * sunk by German bombing, 15 July 1940

Third patrol edit

On 25 July, U-99 departed Lorient for the North Atlantic. Four ships were sunk and three others damaged. On the 31st, the escorts of Convoy OB 191 dropped 20 depth charges on the boat without effect. Later that evening, a flying boat also attacked her, again without causing any damage.[4] The patrol ended on 5 August.

Date Ship Nationality Tonnage[Note 1] (GRT) Fate
28 July 1940 Auckland Star   United Kingdom 13,212 Sunk
29 July 1940 Clan Menzies   United Kingdom 7,336 Sunk
31 July 1940 Jamaica Progress   United Kingdom 5,475 Sunk
Jersey City †   United Kingdom 6,322 Sunk
2 August 1940 Alexia †, ‡   United Kingdom 8,016 Damaged
Lucerna †, ‡   United Kingdom 6,556 Damaged
Strinda †, ‡   Norway 10,973 Damaged

† Convoy OB 191, ‡ Damaged

Fourth patrol edit

U-99 departed Lorient on 4 September for the North Atlantic; seven ships were sunk. The patrol ended on the 25th. U-99 was slightly damaged in an air raid on Lorient on 27 September.[4]

Date Ship Nationality Tonnage[Note 1] (GRT) Fate
11 September 1940 Albionic   United Kingdom 2,468 Sunk
15 September 1940 Kenordoc †   Canada 1,780 Sunk
16 September 1940 Lotos †   Norway 1,327 Sunk
17 September 1940 Crown Arun ‡   United Kingdom 2,372 Sunk
21 September 1940 Baron Blythswood *   United Kingdom 3,668 Sunk
Elmbank *   United Kingdom 5,156 Sunk
Invershannon*   United Kingdom 9,154 Sunk

† Convoy SC 3, ‡ Convoy HX 71, * Convoy HX 72

Fifth patrol edit

On 13 October, U-99 departed Lorient to patrol the North West Approaches. Six ships from Convoy SC 7 were sunk and another was damaged. The patrol ended on 22 October.

 
Empire Brigade
 
Postcard of Laurentic
Date Ship Nationality Tonnage[Note 1] (GRT) Fate
18 October 1940 Empire Miniver   United Kingdom 6,055 Sunk
Fiscus   United Kingdom 4,815 Sunk
Niritos   Greece 3,854 Sunk
19 October 1940 Clintonia †   United Kingdom 3,106 Damaged
Empire Brigade   United Kingdom 5,154 Sunk
Snefjeld   Norway 1,643 Sunk
Thalia   Greece 5,875 Sunk

Sixth patrol edit

U-99 departed Lorient for the North West Approaches on 30 October 1940; four ships were sunk. The patrol ended on 8 November.

Date Ship Nationality Tonnage[Note 1] (GRT) Fate
3 November 1940 Casanare   United Kingdom 5,376 Sunk
HMS Laurentic   Royal Navy 18,724 Sunk
4 November 1940 HMS Patroclus   Royal Navy 11,314 Sunk
5 November 1940 Scottish Maiden †   United Kingdom 6,993 Sunk

† Convoy HX 83

Seventh patrol edit

On 27 November, U-99 departed Lorient for the North Atlantic. Four ships were sunk. The patrol ended on 12 December.

Date Ship Nationality Tonnage[Note 1] (GRT) Fate
2 December 1940 HMS Forfar   Royal Navy 16,402 Sunk
Samnanger   Norway 4,276 Sunk
3 December 1940 Conch †   United Kingdom 8,376 Sunk
7 December 1940 Farmsum ‡   Netherlands 5,237 Sunk

† Convoy HX 90, ‡ Convoy OB 252

Eighth patrol edit

U-99 departed Lorient on 22 February 1941 to patrol in the North Atlantic; eight ships were sunk. U-99 was attacked herself, with severe damage inflicted. Kretschmer surrendered and scuttled the submarine with the loss of three lives.

Date Ship Nationality Tonnage[Note 1] (GRT) Fate
7 March 1941 Athelbeach †   United Kingdom 6,568 Sunk
Terje Viken   United Kingdom 20,638 Sunk
16 March 1941 Beduin ‡   Norway 8,136 Sunk
Ferm ‡   Norway 6,593 Sunk
Franche-Comté ‡   United Kingdom 9,314 Damaged
J. B. White   Canada 7,375 Sunk
Korshamn ‡   Sweden 6,673 Sunk
Venetia †   United Kingdom 5,728 Sunk

† Convoy OB 293, ‡ Convoy HX 112

Fate edit

On 17 March 1941, U-99 had just fired the last of her torpedoes and sunk Korshamn when the Watch Officer spotted a destroyer, southeast of Iceland in approximate position 61°N 12°W / 61°N 12°W / 61; -12. He immediately ordered a dive, contrary to Kretschmer's standing orders,[7] but once the boat was under it was quickly fixed on ASDIC and attacked by HMS Walker and Vanoc. U-99 was driven deep by the attack but was nonetheless severely damaged. Kretschmer had no choice but to surface; immediately a barrage of fire greeted the boat. Kretschmer sent a message to Donald Macintyre, Walker's captain, "CAPTAIN TO CAPTAIN. I AM SUNKING [sic] PLEASE RESCUE MY CREW."[8] He then ordered that the boat should be scuttled. Forty crew, including Kretschmer, were rescued to become POWs. Three crewmen – the engineering-officer and two ratings – lost their lives.[9] The engineering officer re-entered the sinking U-boat and perished while opening the galley hatch, to hasten the boat's sinking and prevent the British from boarding it.[10]

Macintyre took Kretschmer's binoculars as a souvenir. But in 1955, he gave them back to Kretschmer.

Wolfpack operations edit

U-99 operated with the following Wolfpacks during her career:

  • Wolfpack 1 (20 – 22 September 1940)
  • Wolfpack 2 (17 – 19 October 1940)

Summary of raiding history edit

Date Name Nationality Tonnage[Note 1] Fate[11]
5 July 1940 Magog   Canada 2,053 Sunk
7 July 1940 Sea Glory   United Kingdom 1,964 Sunk
7 July 1940 Bissen   Sweden 1,514 Sunk
8 July 1940 Humber Arm   United Kingdom 5,758 Sunk
12 July 1940 Ia   Greece 4,860 Sunk
12 July 1940 Merisaar   Estonia 2,136 Captured as prize
18 July 1940 Woodbury   United Kingdom 4,434 Sunk
28 July 1940 Auckland Star   United Kingdom 13,212 Sunk
29 July 1940 Clan Menzies   United Kingdom 7,336 Sunk
31 July 1940 Jamaica Progress   United Kingdom 5,475 Sunk
31 July 1940 Jersey City   United Kingdom 6,322 Sunk
2 August 1940 Strinda   Norway 10,973 Damaged
2 August 1940 Lucerna   United Kingdom 6,556 Damaged
2 August 1940 Alexia   United Kingdom 8,016 Damaged
11 September 1940 Albionic   United Kingdom 2,468 Sunk
15 September 1940 Kenordoc   Canada 1,780 Sunk
16 September 1940 Lotos   Norway 1,327 Sunk
17 September 1940 Crown Arun   United Kingdom 2,372 Sunk
21 September 1940 Invershannon   United Kingdom 9,154 Sunk
21 September 1940 Baron Blythswood   United Kingdom 3,668 Sunk
21 September 1940 Elmbank   United Kingdom 5,156 Sunk
18 October 1940 Empire Miniver   United Kingdom 6,055 Sunk
18 October 1940 Niritos   Greece 3,854 Sunk
18 October 1940 Fiscus   United Kingdom 4,815 Sunk
19 October 1940 Empire Brigade   United Kingdom 5,154 Sunk
19 October 1940 Thalia   Greece 5,875 Sunk
19 October 1940 Snefjeld   Norway 1,643 Sunk
19 October 1940 Clintonia   United Kingdom 3,106 Damaged
3 November 1940 Casanare   United Kingdom 5,376 Sunk
3 November 1940 HMS Laurentic   Royal Navy 18,724 Sunk
4 November 1940 HMS Patroclus   Royal Navy 11,314 Sunk
5 November 1940 Scottish Maiden   United Kingdom 6,993 Sunk
2 December 1940 HMS Forfar   Royal Navy 16,402 Sunk
2 December 1940 Samnanger   Norway 4,276 Sunk
3 December 1940 Conch   United Kingdom 8,376 Sunk
7 December 1940 Farmsum   Netherlands 5,237 Sunk
7 March 1941 Terje Viken   United Kingdom 20,638 Sunk
7 March 1941 Athelbeach   United Kingdom 6,568 Sunk
16 March 1941 Beduin   Norway 8,136 Sunk
16 March 1941 Franche-Comté   United Kingdom 9,314 Damaged
16 March 1941 J. B. White   Canada 7,375 Sunk
16 March 1941 Korshamn   Sweden 6,673 Sunk
16 March 1941 Venetia   United Kingdom 5,728 Sunk
16 March 1941 Ferm   Norway 6,593 Sunk

See also edit

References edit

Notes edit

  1. ^ a b c d e f g h Merchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.

Citations edit

  1. ^ Kemp 1997, p. 69.
  2. ^ Niestle 1998, p. 41.
  3. ^ a b c d Gröner 1991, pp. 43–44.
  4. ^ a b c d e Helgason, Guðmundur. "U-99". uboat.net. Retrieved 17 November 2009.
  5. ^ Helgason, Guðmundur. "Merisaar". uboat.net. Retrieved 17 November 2009.
  6. ^ Helgason, Guðmundur. "HMS Manistee (F104)". uboat.net. Retrieved 17 November 2009.
  7. ^ White 2006, p. 79.
  8. ^ White 2006, p. 81.
  9. ^ C.B. 04051 (20) "U 99" Interrogation of Survivors. Naval Intelligence Division, Admiralty. April 1941. p. 7.
  10. ^ C.B. 04051 (20) "U 99" Interrogation of Survivors. Naval Intelligence Division, Admiralty. April 1941. p. 14.
  11. ^ Helgason, Guðmundur. "Ships hit by U-99". German U-boats of WWII - uboat.net. Retrieved 11 December 2013.

Bibliography edit

  • 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. ISBN 1-55750-186-6.
  • Busch, Rainer; Röll, Hans-Joachim (1999). Deutsche U-Boot-Verluste von September 1939 bis Mai 1945 [German U-boat losses from September 1939 to May 1945]. Der U-Boot-Krieg (in German). Vol. IV. Hamburg, Berlin, Bonn: Mittler. ISBN 3-8132-0514-2.
  • Edwards, Bernard (1996). Dönitz and the Wolf Packs – The U-boats at War. Cassell Military Classics. pp. 23, 27, 28, 32, 35, 42–44, 48–49. ISBN 0-304-35203-9.
  • Gröner, Erich; Jung, Dieter; Maass, Martin (1991). German Warships 1815–1945, U-boats and Mine Warfare Vessels. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.
  • Kemp, Paul (1997). U-Boats Destroyed, German Submarine Losses in the World Wars. Arms and Armour. ISBN 1-85409-515-3.
  • Niestle, Axel (1998). German U-Boat Losses during World War II. Greenhill Books. ISBN 1-85367-352-8.
  • Sharpe, Peter (1998). U-Boat Fact File. Great Britain: Midland Publishing. ISBN 1-85780-072-9.
  • White, David Fairbank (2006). Bitter Ocean – The dramatic story of the Battle of the Atlantic 1939–1945. Headline Publishing Group. ISBN 978-0-7553-1089-0.

External links edit

  • Hofmann, Markus. "U 99". Deutsche U-Boote 1935–1945 – u-boot-archiv.de (in German). Retrieved 8 December 2014.
  • uboataces.com webpage with insignia for U-99

April 26, 2024
german, submarine, 1940, other, ships, with, same, name, german, submarine, german, submarine, type, viib, boat, nazi, germany, kriegsmarine, during, world, laid, down, march, 1939, friedrich, krupp, germaniawerft, kiel, yard, number, launched, march, 1940, un. For other ships with the same name see German submarine U 99 German submarine U 99 was a Type VIIB U boat of Nazi Germany s Kriegsmarine during World War II She was laid down on 31 March 1939 at the Friedrich Krupp Germaniawerft in Kiel as yard number 593 She was launched on 12 March 1940 under the command of Korvettenkapitan Otto Kretschmer and was assigned to the 7th U boat Flotilla based in Kiel and later in St Nazaire U 52 a typical Type VIIB boatHistory Nazi Germany NameU 99 Ordered15 December 1937 BuilderGermaniawerft Kiel Yard number593 Laid down31 March 1939 Launched12 March 1940 Commissioned18 April 1940 FateSunk on 17 March 1941 by HMS Walker southeast of Iceland Three dead and 40 survivors 1 2 General characteristics Class and typeType VIIB submarine Displacement753 tonnes 741 long tons surfaced 857 t 843 long tons submerged Length66 50 m 218 ft 2 in o a 48 80 m 160 ft 1 in pressure hull Beam6 20 m 20 ft 4 in o a 4 70 m 15 ft 5 in pressure hull Height9 50 m 31 ft 2 in Draught4 74 m 15 ft 7 in Installed power2 800 3 200 PS 2 100 2 400 kW 2 800 3 200 bhp diesels 750 PS 550 kW 740 shp electric Propulsion2 shafts 2 diesel engines 2 electric motors Speed17 9 knots 33 2 km h 20 6 mph surfaced 8 knots 15 km h 9 2 mph submerged Range9 400 nmi 17 400 km 10 800 mi at 10 knots 19 km h 12 mph surfaced 90 nmi 170 km 100 mi at 4 knots 7 4 km h 4 6 mph submerged Test depth220 m 720 ft Crush depth 230 250 m 750 820 ft Complement4 officers 40 56 enlisted Sensors and processing systemsGruppenhorchgerat Armament5 53 3 cm 21 in torpedo tubes four bow one stern 14 torpedoes or 26 TMA mines 1 8 8 cm 3 46 in deck gun 220 rounds 1 2 cm 0 79 in C 30 anti aircraft gun Service record Part of 7th U boat Flotilla 18 April 1940 17 March 1941Identification codes M 17 046Commanders K Kapt Otto Kretschmer 18 April 1940 17 March 1941Operations 8 patrols 1st patrol 18 25 June 1940 2nd patrol 27 June 21 July 1940 3rd patrol 25 July 5 August 1940 4th patrol 4 25 September 1940 5th patrol 13 22 October 1940 6th patrol 30 October 8 November 1940 7th patrol 27 November 12 December 1940 8th patrol 22 February 17 March 1941Victories 35 merchant ships sunk 198 218 GRT 3 auxiliary warships sunk 46 440 GRT 5 merchant ships damaged 37 965 GRT 1 merchant ship taken as prize 2 136 GRT U 99 was one of the most successful German U boats in the war sinking 38 ships for a total tonnage of 244 658 gross register tons GRT of Allied shipping in eight patrols She damaged five more ships and took one vessel as a prize U 99 was sunk on 17 March 1941 by British destroyer HMS Walker while attacking convoy HX 112 Contents 1 Design 2 Service history 2 1 First patrol 2 2 Second patrol 2 3 Third patrol 2 4 Fourth patrol 2 5 Fifth patrol 2 6 Sixth patrol 2 7 Seventh patrol 2 8 Eighth patrol 3 Fate 4 Wolfpack operations 5 Summary of raiding history 6 See also 7 References 7 1 Notes 7 2 Citations 8 Bibliography 9 External linksDesign editGerman Type VIIB submarines were preceded by the shorter Type VIIA submarines U 99 had a displacement of 753 tonnes 741 long tons when at the surface and 857 tonnes 843 long tons while submerged 3 She had a total length of 66 50 m 218 ft 2 in a pressure hull length of 48 80 m 160 ft 1 in a beam of 6 20 m 20 ft 4 in a height of 9 50 m 31 ft 2 in and a draught of 4 74 m 15 ft 7 in The submarine was powered by two Germaniawerft F46 four stroke six cylinder supercharged diesel engines producing 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 two BBC GG UB 720 8 double acting electric motors producing 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 9 knots 33 2 km h 20 6 mph and a maximum submerged speed of 8 knots 15 km h 9 2 mph 3 When submerged the boat could operate for 90 nautical miles 170 km 100 mi at 4 knots 7 4 km h 4 6 mph when surfaced she could travel 8 700 nautical miles 16 100 km 10 000 mi at 10 knots 19 km h 12 mph U 99 was fitted with five 53 3 cm 21 in torpedo tubes four fitted at the bow and one at the stern fourteen torpedoes one 8 8 cm 3 46 in SK C 35 naval gun 220 rounds and one 2 cm 0 79 in anti aircraft gun The boat had a complement of between forty four and sixty 3 Service history editFrom April to June 1940 the crew of U 99 were under training based at Kiel and St Nazaire First patrol edit On 18 June U 99 departed Kiel for operations in the North Sea west of Norway An Arado Ar 196 seaplane from the German battlecruiser Scharnhorst attacked her having mistaken her for a British submarine Two days later U 99 was attacked by two aircraft minor damage was inflicted 4 She returned to Kiel on 25 June Second patrol edit U 99 departed Wilhelmshaven on 27 June to patrol southwest of Ireland On 29 June she was attacked by British aircraft A crash dive was carried out with the result that the boat hit the seabed causing some damage which was able to be repaired 4 On this patrol U 99 sank six ships and captured one the Estonian 2 136 GRT cargo steamship Merisaar carrying a load of timber from New Orleans to Cork Ireland 5 An attack on the 5 360 GRT Manistee was called off on 7 July when the defensively equipped merchant ship returned fire 6 On 8 July over 100 depth charges were dropped by the escorts of Convoy HX 53 but U 99 escaped undamaged 4 The patrol ended on 21 July nbsp Painting of Merisaar s lifeboat approaching U 99 on 12 July 1940 Date Ship Nationality Tonnage Note 1 Fate 5 July 1940 Magog nbsp Canada 2 053 Sunk 7 July 1940 Bissen nbsp Sweden 1 514 Sunk Manistee nbsp United Kingdom 5 360 Escaped Sea Glory nbsp United Kingdom 1 964 Sunk 8 July 1940 Humber Arm nbsp United Kingdom 5 758 Sunk 12 July 1940 Ia nbsp Greece 4 860 Sunk Merisaar nbsp Estonia 2 136 Captured as prize 18 July 1940 Woodbury nbsp United Kingdom 4 434 Sunk Convoy HX 52 Convoy HX 53 sunk by German bombing 15 July 1940 Third patrol edit On 25 July U 99 departed Lorient for the North Atlantic Four ships were sunk and three others damaged On the 31st the escorts of Convoy OB 191 dropped 20 depth charges on the boat without effect Later that evening a flying boat also attacked her again without causing any damage 4 The patrol ended on 5 August Date Ship Nationality Tonnage Note 1 GRT Fate 28 July 1940 Auckland Star nbsp United Kingdom 13 212 Sunk 29 July 1940 Clan Menzies nbsp United Kingdom 7 336 Sunk 31 July 1940 Jamaica Progress nbsp United Kingdom 5 475 Sunk Jersey City nbsp United Kingdom 6 322 Sunk 2 August 1940 Alexia nbsp United Kingdom 8 016 Damaged Lucerna nbsp United Kingdom 6 556 Damaged Strinda nbsp Norway 10 973 Damaged Convoy OB 191 Damaged Fourth patrol edit U 99 departed Lorient on 4 September for the North Atlantic seven ships were sunk The patrol ended on the 25th U 99 was slightly damaged in an air raid on Lorient on 27 September 4 Date Ship Nationality Tonnage Note 1 GRT Fate 11 September 1940 Albionic nbsp United Kingdom 2 468 Sunk 15 September 1940 Kenordoc nbsp Canada 1 780 Sunk 16 September 1940 Lotos nbsp Norway 1 327 Sunk 17 September 1940 Crown Arun nbsp United Kingdom 2 372 Sunk 21 September 1940 Baron Blythswood nbsp United Kingdom 3 668 Sunk Elmbank nbsp United Kingdom 5 156 Sunk Invershannon nbsp United Kingdom 9 154 Sunk Convoy SC 3 Convoy HX 71 Convoy HX 72 Fifth patrol edit On 13 October U 99 departed Lorient to patrol the North West Approaches Six ships from Convoy SC 7 were sunk and another was damaged The patrol ended on 22 October nbsp Empire Brigade nbsp Postcard of Laurentic Date Ship Nationality Tonnage Note 1 GRT Fate 18 October 1940 Empire Miniver nbsp United Kingdom 6 055 Sunk Fiscus nbsp United Kingdom 4 815 Sunk Niritos nbsp Greece 3 854 Sunk 19 October 1940 Clintonia nbsp United Kingdom 3 106 Damaged Empire Brigade nbsp United Kingdom 5 154 Sunk Snefjeld nbsp Norway 1 643 Sunk Thalia nbsp Greece 5 875 Sunk Sixth patrol edit U 99 departed Lorient for the North West Approaches on 30 October 1940 four ships were sunk The patrol ended on 8 November Date Ship Nationality Tonnage Note 1 GRT Fate 3 November 1940 Casanare nbsp United Kingdom 5 376 Sunk HMS Laurentic nbsp Royal Navy 18 724 Sunk 4 November 1940 HMS Patroclus nbsp Royal Navy 11 314 Sunk 5 November 1940 Scottish Maiden nbsp United Kingdom 6 993 Sunk Convoy HX 83 Seventh patrol edit On 27 November U 99 departed Lorient for the North Atlantic Four ships were sunk The patrol ended on 12 December Date Ship Nationality Tonnage Note 1 GRT Fate 2 December 1940 HMS Forfar nbsp Royal Navy 16 402 Sunk Samnanger nbsp Norway 4 276 Sunk 3 December 1940 Conch nbsp United Kingdom 8 376 Sunk 7 December 1940 Farmsum nbsp Netherlands 5 237 Sunk Convoy HX 90 Convoy OB 252 Eighth patrol edit U 99 departed Lorient on 22 February 1941 to patrol in the North Atlantic eight ships were sunk U 99 was attacked herself with severe damage inflicted Kretschmer surrendered and scuttled the submarine with the loss of three lives Date Ship Nationality Tonnage Note 1 GRT Fate 7 March 1941 Athelbeach nbsp United Kingdom 6 568 Sunk Terje Viken nbsp United Kingdom 20 638 Sunk 16 March 1941 Beduin nbsp Norway 8 136 Sunk Ferm nbsp Norway 6 593 Sunk Franche Comte nbsp United Kingdom 9 314 Damaged J B White nbsp Canada 7 375 Sunk Korshamn nbsp Sweden 6 673 Sunk Venetia nbsp United Kingdom 5 728 Sunk Convoy OB 293 Convoy HX 112Fate editOn 17 March 1941 U 99 had just fired the last of her torpedoes and sunk Korshamn when the Watch Officer spotted a destroyer southeast of Iceland in approximate position 61 N 12 W 61 N 12 W 61 12 He immediately ordered a dive contrary to Kretschmer s standing orders 7 but once the boat was under it was quickly fixed on ASDIC and attacked by HMS Walker and Vanoc U 99 was driven deep by the attack but was nonetheless severely damaged Kretschmer had no choice but to surface immediately a barrage of fire greeted the boat Kretschmer sent a message to Donald Macintyre Walker s captain CAPTAIN TO CAPTAIN I AM SUNKING sic PLEASE RESCUE MY CREW 8 He then ordered that the boat should be scuttled Forty crew including Kretschmer were rescued to become POWs Three crewmen the engineering officer and two ratings lost their lives 9 The engineering officer re entered the sinking U boat and perished while opening the galley hatch to hasten the boat s sinking and prevent the British from boarding it 10 Macintyre took Kretschmer s binoculars as a souvenir But in 1955 he gave them back to Kretschmer Wolfpack operations editU 99 operated with the following Wolfpacks during her career Wolfpack 1 20 22 September 1940 Wolfpack 2 17 19 October 1940 Summary of raiding history editDate Name Nationality Tonnage Note 1 Fate 11 5 July 1940 Magog nbsp Canada 2 053 Sunk 7 July 1940 Sea Glory nbsp United Kingdom 1 964 Sunk 7 July 1940 Bissen nbsp Sweden 1 514 Sunk 8 July 1940 Humber Arm nbsp United Kingdom 5 758 Sunk 12 July 1940 Ia nbsp Greece 4 860 Sunk 12 July 1940 Merisaar nbsp Estonia 2 136 Captured as prize 18 July 1940 Woodbury nbsp United Kingdom 4 434 Sunk 28 July 1940 Auckland Star nbsp United Kingdom 13 212 Sunk 29 July 1940 Clan Menzies nbsp United Kingdom 7 336 Sunk 31 July 1940 Jamaica Progress nbsp United Kingdom 5 475 Sunk 31 July 1940 Jersey City nbsp United Kingdom 6 322 Sunk 2 August 1940 Strinda nbsp Norway 10 973 Damaged 2 August 1940 Lucerna nbsp United Kingdom 6 556 Damaged 2 August 1940 Alexia nbsp United Kingdom 8 016 Damaged 11 September 1940 Albionic nbsp United Kingdom 2 468 Sunk 15 September 1940 Kenordoc nbsp Canada 1 780 Sunk 16 September 1940 Lotos nbsp Norway 1 327 Sunk 17 September 1940 Crown Arun nbsp United Kingdom 2 372 Sunk 21 September 1940 Invershannon nbsp United Kingdom 9 154 Sunk 21 September 1940 Baron Blythswood nbsp United Kingdom 3 668 Sunk 21 September 1940 Elmbank nbsp United Kingdom 5 156 Sunk 18 October 1940 Empire Miniver nbsp United Kingdom 6 055 Sunk 18 October 1940 Niritos nbsp Greece 3 854 Sunk 18 October 1940 Fiscus nbsp United Kingdom 4 815 Sunk 19 October 1940 Empire Brigade nbsp United Kingdom 5 154 Sunk 19 October 1940 Thalia nbsp Greece 5 875 Sunk 19 October 1940 Snefjeld nbsp Norway 1 643 Sunk 19 October 1940 Clintonia nbsp United Kingdom 3 106 Damaged 3 November 1940 Casanare nbsp United Kingdom 5 376 Sunk 3 November 1940 HMS Laurentic nbsp Royal Navy 18 724 Sunk 4 November 1940 HMS Patroclus nbsp Royal Navy 11 314 Sunk 5 November 1940 Scottish Maiden nbsp United Kingdom 6 993 Sunk 2 December 1940 HMS Forfar nbsp Royal Navy 16 402 Sunk 2 December 1940 Samnanger nbsp Norway 4 276 Sunk 3 December 1940 Conch nbsp United Kingdom 8 376 Sunk 7 December 1940 Farmsum nbsp Netherlands 5 237 Sunk 7 March 1941 Terje Viken nbsp United Kingdom 20 638 Sunk 7 March 1941 Athelbeach nbsp United Kingdom 6 568 Sunk 16 March 1941 Beduin nbsp Norway 8 136 Sunk 16 March 1941 Franche Comte nbsp United Kingdom 9 314 Damaged 16 March 1941 J B White nbsp Canada 7 375 Sunk 16 March 1941 Korshamn nbsp Sweden 6 673 Sunk 16 March 1941 Venetia nbsp United Kingdom 5 728 Sunk 16 March 1941 Ferm nbsp Norway 6 593 SunkSee also editList of successful U boats Operation KiebitzReferences editNotes edit a b c d e f g h Merchant ship tonnages are in gross register tons Military vessels are listed by tons displacement Citations edit Kemp 1997 p 69 Niestle 1998 p 41 a b c d Groner 1991 pp 43 44 a b c d e Helgason Gudmundur U 99 uboat net Retrieved 17 November 2009 Helgason Gudmundur Merisaar uboat net Retrieved 17 November 2009 Helgason Gudmundur HMS Manistee F104 uboat net Retrieved 17 November 2009 White 2006 p 79 White 2006 p 81 C B 04051 20 U 99 Interrogation of Survivors Naval Intelligence Division Admiralty April 1941 p 7 C B 04051 20 U 99 Interrogation of Survivors Naval Intelligence Division Admiralty April 1941 p 14 Helgason Gudmundur Ships hit by U 99 German U boats of WWII uboat net Retrieved 11 December 2013 Bibliography editBusch Rainer Roll 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 ISBN 1 55750 186 6 Busch Rainer Roll Hans Joachim 1999 Deutsche U Boot Verluste von September 1939 bis Mai 1945 German U boat losses from September 1939 to May 1945 Der U Boot Krieg in German Vol IV Hamburg Berlin Bonn Mittler ISBN 3 8132 0514 2 Edwards Bernard 1996 Donitz and the Wolf Packs The U boats at War Cassell Military Classics pp 23 27 28 32 35 42 44 48 49 ISBN 0 304 35203 9 Groner Erich Jung Dieter Maass Martin 1991 German Warships 1815 1945 U boats and Mine Warfare Vessels Vol 2 Translated by Thomas Keith Magowan Rachel London Conway Maritime Press ISBN 0 85177 593 4 Kemp Paul 1997 U Boats Destroyed German Submarine Losses in the World Wars Arms and Armour ISBN 1 85409 515 3 Niestle Axel 1998 German U Boat Losses during World War II Greenhill Books ISBN 1 85367 352 8 Sharpe Peter 1998 U Boat Fact File Great Britain Midland Publishing ISBN 1 85780 072 9 White David Fairbank 2006 Bitter Ocean The dramatic story of the Battle of the Atlantic 1939 1945 Headline Publishing Group ISBN 978 0 7553 1089 0 External links editHofmann Markus U 99 Deutsche U Boote 1935 1945 u boot archiv de in German Retrieved 8 December 2014 uboataces com webpage with insignia for U 99 uboatarchive net U 99 Interrogation of Survivors Naval Intelligence Division April 1941 Retrieved from https en wikipedia org w index php title German submarine U 99 1940 amp oldid 1207728962, wikipedia, wiki, book, books, library,

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