German submarine U-68 (1940)

U-505, a typical Type IXC boat
History
Nazi Germany
Name:	U-68
Ordered:	7 August 1939
Builder:	DeSchiMAG AG Weser, Bremen
Yard number:	987
Laid down:	20 April 1940
Launched:	22 October 1940
Commissioned:	1 February 1941
Fate:	Sunk 10 April 1944 north-west of Madeira, Portugal. 56 dead and 1 survivor[1]
General characteristics
Class and type:	Type IXC submarine
Displacement:	1,120 t (1,100 long tons) surfaced 1,232 t (1,213 long tons) submerged
Length:	76.76 m (251 ft 10 in) o/a 58.75 m (192 ft 9 in) pressure hull
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)
Draught:	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:	2 shafts 2 × diesel engines 2 × electric motors
Range:	24,880 nmi (46,080 km; 28,630 mi) at 10 knots (19 km/h; 12 mph) surfaced 117 nmi (217 km; 135 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth:	230 m (750 ft)
Complement:	4 officers, 44 enlisted48 to 56
Armament:	6 × torpedo tubes (4 bow, 2 stern) 22 × 53.3 cm (21 in) torpedoes 1 × 10.5 cm (4.1 in) deck gun (180 rounds) 1 × 3.7 cm (1.5 in) AA gun 1 × twin 2 cm FlaK 30 AA guns
Service record
Part of:	Kriegsmarine: 2nd U-boat Flotilla
Commanders:	K.Kapt. Karl-Freidrich Merten 11 February 1941 – 21 January 1943 Oblt.z.S. Albert Lauzemis 21 January – 16 June 1943 Oblt.z.S. Ekkehard Scherraus 14 June – July 1943 Oblt.z.S. Gerhard Seehausen July – 29 July 1943 Oblt.z.S. Albert Lauzemis 30 July 1943 – 10 April 1944
Operations:	Ten: 1st patrol: 30 June – 1 August 1941 2nd patrol: 11 September – 25 December 1941 3rd patrol: 11 February – 13 April 1942 4th patrol: 14 May – 10 July 1942 5th patrol: 20 August – 6 December 1942 6th patrol: 3 February – 7 May 1943 7th patrol: 12–16 June 1943 8th patrol: 14–15 August 1943 9th patrol: 8 September – 23 December 1943 10th patrol: 22 March – 10 April 1944
Victories:	32 ships sunk (197,453 GRT) one auxiliary warship sunk (545 GRT)

German submarine U-68 was a Type IXC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 20 April 1940 at the DeSchiMAG AG Weser yard at Bremen as yard number 987, launched on 22 October and commissioned on 1 January 1941 under the command of Korvettenkapitän Karl-Friedrich Merten as part of 2nd U-boat Flotilla.

U-68 conducted ten combat patrols, sinking 32 merchant ships, for a total of 197,453 gross register tons (GRT); she also sank one auxiliary warship of 545 GRT. She was a member of one wolfpack.

On 10 April 1944, during her tenth patrol, she was sunk northwest of Madeira by US aircraft from the escort carrier Guadalcanal.

Design

German Type IXC submarines were slightly larger than the original Type IXBs. U-68 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.^[2] 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 metric horsepower (740 kW; 990 shp) 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).^[2]

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).^[2] When submerged, the boat 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-68 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.^[2]

Service history

1st patrol

U-68 left Kiel on 30 June 1941 for the Atlantic Ocean via the gap between Iceland and the Faroe Islands. She was unsuccessfully attacked with 24 depth charges by the British corvette Rhododendron west northwest of Cape Finisterre in Spain.^[3] She docked at the port of Lorient, on the French Atlantic coast, on 1 August. She would be based there for the rest of her career.

2nd patrol

Heading for the south Atlantic, the boat came across Silverbelle southwest of the Canary Islands and sank her on 22 September 1941. A month later, she sank RFA Darkdale while the ship was at anchor off Jamestown, Saint Helena on 22 October. Her third victim, Hazelside, was destroyed on the 28th, 600 nmi (1,100 km; 690 mi) southeast of Saint Helena. U-68 also sank Bradford City west of South West Africa (now Namibia) on 1 November. The U-boat collided with the stricken ship while diving underneath her. The submarine's bow was bent.

Nevertheless, the submarine returned to Lorient on 25 December.

3rd patrol

U-68's third sortie was also conducted off the west coast of Africa. She sank Helenus on 3 March 1942 200 nmi (370 km; 230 mi) south of Freetown in Sierra Leone, followed by Baluchstan on the 8th. The boat's crew were kept busy, sinking Baron Newlands on the 16th and Ile de Batz on the 17th; all the vessels met their end in the vicinity of Liberia.

She also sank Scottish Prince about 180 nmi (330 km; 210 mi) west of Takoradi in Gold Coast^[4] and Allende, both on the 17th.

U-68 had turned for home when she sank Muncaster Castle with two torpedoes south southwest of Monrovia.^[4] More than ten lifeboats were seen by the Germans; there were 329 survivors.

4th patrol

For her fourth patrol U-68 moved to the Caribbean Sea, leaving Lorient on 14 May 1942. On the night of 5 June she sank MV C.O. Stillman, which was then the largest oil tanker in the World.

On the night of 10 June, northeast of the Panama Canal, she torpedoed the 8,600-ton British freighter Surrey. 5,000 tons of dynamite in the cargo detonated after the ship sank. The shock wave lifted the U-boat out of the water as if she had suffered a torpedo hit; both diesel engines and the gyrocompass were disabled.^[5]

Another victim was Port Montreal. She was sunk with what Merten noted in the boat's war diary as a lucky [torpedo] hit.

In all, U-68 sank seven ships during this patrol before returning to Lorient on 10 July.

5th patrol

The submarine left Lorient on her fifth patrol on 20 August 1942. She would not see her base again until December. At 109 days, this was to be her longest and most successful sally. Heading once more into the South Atlantic, she attacked and sank Trevilley east northeast of Ascension Island on 12 September. The Master and Chief Officer were taken prisoner.

She travelled further south, sinking ships such as Gaasterkerk on 8 October and Sarthe on the same date, both in the area of the Cape of Good Hope. She also disposed of Belgian Fighter on the 9th.

Turning for home on 16 October, she sank City of Cairo on 6 November. U-68 returned a month later to Lorient on 6 December.

6th patrol

The boat's sixth patrol in the first half of 1943 was again to northern South America. Having sunk two ships, she was attacked by a US Mariner flying boat on 2 April; damage was slight.

7th and 8th patrols

U-68 was attacked by one of four British De Havilland Mosquitos on the western edge of the Bay of Biscay on 14 June 1943. One man was killed, three were wounded

Patrol number eight was relatively uneventful.

9th patrol

The boat returned to her most successful hunting ground - the South Atlantic. In another mammoth patrol (107 days), she sank four more ships.

One of them, the Norwegian tanker Litiopa, had numerous torpedoes and rounds from the deck gun fired at her, but stubbornly refused to succumb. Having been initially encountered at night on 21 October 1943, it was not until the following day that she sank.

The Litiopa's sole escort was the mine-sweeping trawler HMS Orfasy. She was sunk relatively easily on 21 October before the attack on the tanker.

The other two ships were New Columbia, (sunk southwest of Bingerville, Ivory Coast) on 31 October and the French Fort de Vaux on 30 November. The latter vessel met her end after 'Aphrodite' radar decoys had been used to lure the escort vessels away.

U-68's inbound route took her close to the northwest Spanish coast. She docked at Lorient on 23 December 1943.

10th patrol and loss

The boat left Lorient for the last time on 22 March 1944. On 10 April, she was sunk northwest of the Portuguese island of Madeira, by depth charges and rockets from Grumman Avenger and Grumman Wildcat aircraft from the United States escort carrier Guadalcanal. U-68 was lost at position 33°24′N 18°59′W / 33.400°N 18.983°WCoordinates: 33°24′N 18°59′W / 33.400°N 18.983°W.

56 men died; there was one survivor.^[6]

Wolfpacks

U-68 took part in one wolfpack, namely.

• Eisbär (25 August - 1 September 1942)

Summary of raiding history

Date	Ship	Nationality	Tonnage[Note 1]	Fate[7]
22 September 1941	Silverbelle	United Kingdom	5,302	Sunk
22 October 1941	Darkdale	United Kingdom	8,145	Sunk
28 October 1941	Hazelside	United Kingdom	5,297	Sunk
1 November 1941	Bradford City	United Kingdom	4,953	Sunk
3 March 1942	Helerus	United Kingdom	7,366	Sunk
8 March 1942	Baluchistan	United Kingdom	6,992	Sunk
16 March 1942	Baron Newlands	United Kingdom	3,386	Sunk
17 March 1942	Allende	United Kingdom	5,081	Sunk
17 March 1942	Ile de Batz	United Kingdom	5,755	Sunk
17 March 1942	Scottish Prince	United Kingdom	4,917	Sunk
30 March 1942	Muncaster Castle	United Kingdom	5,853	Sunk
5 June 1942	L.J. Drake	United States	6,693	Sunk
5 June 1942	C.O. Stillman	Panama	16,436	Sunk
10 June 1942	Ardenvohr	United Kingdom	5,025	Sunk
10 June 1942	Port Montreal	United Kingdom	5,882	Sunk
10 June 1942	Surrey	United Kingdom	8,581	Sunk
15 June 1942	Frimaire	Free France	9,242	Sunk
23 June 1942	Arnaga	Panama	2,345	Sunk
12 September 1942	Trevilley	United Kingdom	5,298	Sunk
15 September 1942	Breedijk	Netherlands	6,861	Sunk
8 October 1942	Gaasterkerk	Netherlands	8,679	Sunk
8 October 1942	Koumoundouros	Greece	3,598	Sunk
8 October 1942	Sarthe	United Kingdom	5,271	Sunk
8 October 1942	Swiftsure	United States	8,207	Sunk
9 October 1942	Belgian Fighter	Belgium	5,403	Sunk
9 October 1942	Examelia	United States	4,981	Sunk
6 November 1942	City of Cairo[8]	United Kingdom	8,034	Sunk
13 March 1943	Ceres	Netherlands	2,680	Sunk
13 March 1943	Cities Service Missouri	United States	7,506	Sunk
21 October 1943	HMT Orfasy	Royal Navy	545	Sunk
22 October 1943	Litiopa	Norway	5,356	Sunk
31 October 1943	New Columbia	United Kingdom	6,574	Sunk
30 November 1943	Fort de Vaux	Free France	5,186	Sunk
Total amount of tonnage:			201,430 tons

References

Notes

1. Merchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.

Citations

1. Helgason, Guðmundur. "The Type IXC boat U-68". German U-boats of WWII - uboat.net. Retrieved 7 December 2014.
2. Gröner 1991, p. 68.
3. The Times Atlas of the World, 1995, p. 15
4. The Times Atlas of the World, 1995, p. 48
5. Blair, Clay (1996). Hitler's U-boat War: The Hunters, 1939–1942. Random House. p. not cited. ISBN 0-394-58839-8.
6. Wise Jr, James (2013). Sole Survivors of the Sea. New York: Naval Institute Press. ISBN 9781612513652.
7. Helgason, Guðmundur. "Ships hit by U-68". German U-boats of WWII - uboat.net. Retrieved 23 November 2012.
8. "Record dive rescues $50m wartime silver from ocean floor". BBC. Retrieved 15 April 2015.

Bibliography

• 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). IV. Hamburg, Berlin, Bonn: Mittler. ISBN 3-8132-0514-2.
• Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.
• Blair, Clay (2000). Hitler's U-Boat War: The Hunted, 1942 – 1945. New York: Modern Library. ISBN 0-679-64033-9.
• Dunmore, Spencer (2002). Lost Subs: From the Hunley to the Kursk. The Greatest Submarines Ever Lost – and Found. Cambridge, MA: Da Capo Press. ISBN 0-306-81140-5.
• Morisson, Samuel (1956). The Atlantic Battle Won, May 1943 – May 1945. History of United States Naval Operations in World War II. X. Boston: Little, Brown and Company. OCLC 768913584.
• The Times Atlas of the World (Third, revised ed.). 1995. ISBN 0-7230-0809-4.

External links

• "U-68". U-boat Archive. Retrieved 4 August 2016.
• Helgason, Guðmundur. "The Type IXC boat U-68". German U-boats of WWII - uboat.net. Retrieved 7 December 2014.
• Hofmann, Markus. "U 68". Deutsche U-Boote 1935-1945 - u-boot-archiv.de (in German). Retrieved 7 December 2014.