4th October – 3rd November 1939 (The U-boat war – The English Channel, North Sea and the Atlantic)
One kill missing from post 41 (missed the cut-off date by one day) was that of Otto Kretschmer in U-23, who sank a small British merchant of less than 1,000 tons and so is included in the numbers here.
The mine barrage laid in the English Channel (see Post 84) began to pay dividends for the British when U-12 (Kapt. Dietrich von der Ropp) blew up trying to traverse the Channel on the 8th October. There were no survivors. Donitz did not believe the sinking due to mines and was to pay the price later in the month.
With no reinforcements likely for some time, Donitz deployed his U-boats as best he could to try and achieve maximum effect. By now the British had their convoy system properly up and running and Donitz plan was to counter these convoys with “wolfpacks”.
Donitz had the advantage of knowing a good deal about British maritime traffic thanks to the B-dienst code-breaking unit having broken both the Royal Navy’s operational codes and that of the merchant marine.
For various reasons, Donitz had only six ocean-going boats available to form the first wolfpack. This consisted of three type VIIB’s (U-45, U-46 and U-48) and three type IX’s (U-37, U-40 and U-42) commanded at sea by Werner Hartmann (U-37). Five of these boats sailed for the Atlantic around the north of the British Isles, but U-40 (Kapt. Wolfgang Barten) sailed for the Channel…. and, on the 13th October, went straight into the mine barrage that had claimed U-12. Three sailors were rescued by British destroyers.
On the same day the U-42 (Kapt. Rolf Dau) on the boat’s first patrol was also sunk. Dau attacked the 5,000 ton freighter Stonepool on the surface and managed to lightly damage her, but the merchant ship had fired back and given time for two destroyers HMS Imogen and HMS Ilex to arrive on the scene. The two RN vessels undertook a determined depth charge attack, bringing U-42 to the surface. The U-boat was badly damaged and she began to sink almost immediately. Seventeen men, including Dau, were rescued.
I-class destroyer HMS Imogen claimed two U-boats in her brief life. She was lost in a collision with the Town-class cruiser Glasgow in July 1940 in thick fog.
Meanwhile B-dienst had alerted Donitz to convoy KJF3 sailing from Kingston, Jamaica. There was no chance of a proper wolfpack attack – two boats were already lost and others were too far away. However two boats – U-45 and U-48 – did locate the convoy independently and went onto the attack. U-45 (Kapt. Alexander Gelhaar) sunk two vessels, one of which was a 10,000 ton French passenger liner, the Bretagne. She was sailing blacked out but under the latest rules of engagement, Gelhaar should not have attacked her. However for Gelhaar and his crew there was to be no awkward explanations to Donitz. U-45 was set upon by four RN destroyers, Icarus, Inglefield, Intrepid and Ivanhoe. U-45 disappeared without trace shortly after. U-48 (Kapt. Herbert Schultze) meanwhile was having more success, despatching four ships – two French and two British. At this time Hitler ordered a change of rules: all French and British ships (except passenger liners) were no longer bound by the Submarine Protocol and the safety of merchant mariners was no longer the U-boats responsibility.
Donitz then ordered his boats south to attack convoy HG3 sailing from Gibraltar to the UK. U-45 added a further vessel to her tally, and U-46 (Kapt. Herbert Sohler) claimed her first kill of the patrol. Hartmann in U-37, which had sunk three ships so far, claimed another. Donitz recalled his boats and on the return journey Hartmann increased his scorecard to eight ships.
Werner Hartmann. Awareded the Knights Cross on 9th May 1940. His final “score” was 26 ships sunk with a tonnage of 115,337 GRT. He survived the war.
Four other boats were tasked with operations in the Atlantic during October. Only the U-34 (Kapt. Wilhelm Rollman) was to achieve any success, sinking four ships during the month.
Minefields were laid by four boats in October with mixed results. Those that were successful were not to be realised until later – and this included one prize Royal Navy scalp that will be revealed shortly. One boat was lost, that of U16 (Kapt. Horst Wellner) with all hands, while laying mines in the English Channel. Her field sunk a small French vessel in return. U-16 was the third U-boat lost to the mine barrage laid the previous month (although one source has this boat falling victim to an ASW attack).
The Duck U-59 (Kapt. Harald Jurst) sunk three small British vessels whilst returning from patrol at the end of the month. U-boat.net records her fellow Duck, U-13 (Kapt. Karl Daublebsky von Eichhain) as sinking a 4,600 ton British vessel also at the end of the month but I cannot get a second confirmation of that. This "kill" is included in the records below.
Once again Donitz was dismayed to receive regular reports from his U-boats commanders of torpedoes prematurely exploding or other malfunctions. If Donitz was dismayed, one can only wonder what the poor submariners felt……
Summary for the period (not including mines laid the previous month).
U-boat, type, ships sunk
U-13 (Type IIB) – (1) Cairnmona (30th)
U-16 (Type IIB) – (1) Ste Claire (fell victim in November to a mine laid by U-16)
U-23 (Type IIB) – (1) Glen Farg (4th)
U-34 (Type VII) – (4) Gustaf Adolf, Sea Venture (20th) Bronte (27th) Malabar (29th)
U-37 (Type IX) – (8) Vistula (8th), Aris (12th) Vermont (15th) Yorkshire (17th) Menin Ridge, Ledbury, Tafna (24th) Thrasyvoulos (30th)
U-45 (Type VIIB) – (2) Lochavon, Bretagne (14th)
U-46 (Type VIIB) – (1) City of Mandalay (17th)
U-48 (Type VIIB) – (5) Emile Miguet (12th) Heronspool, Louisiane (13th) Sneaton (14th) Clan Chisholm (17th)
U-59 (Type IIC) – (3) St Nidan, Lynx II (28th) HMS Northern Rover (30th)
Total – 26 ships with a tonnage of 122,414
The above was achieved at a cost of four boats sunk:
U-16
U-40
U-42
U-45
There is one U-boat kill missing from this list and the story is coming up next….
Source:
Hitler’s U-boat War Volume I (Clay Blair)
Chronology of the War at Sea 1939-45 (Jurgen Rohwer)
www.uboat.net