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Battle of the Bay of Biscay
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Battle of the Bay of Biscay
The Battle of the Bay of Biscay or Operation Bernau, was a naval action that took place on 28 December 1943 during the Second World War during the Atlantic campaign. The engagement took place between two light cruisers of the Royal Navy and a force of destroyers and torpedo boats of the Kriegsmarine that had sailed to rendezvous with a blockade-runner and escort it to port. The British operation was part of the Allied Operation Stonewall to intercept German blockade-runners off the west coast of France. In the confused action that followed the cruisers HMS Enterprise and HMS Glasgow sank the torpedo boats T26, T25 and the destroyer Z27.
From the start of the war on 3 September 1939, the Allies proclaimed a blockade of Germany to prevent the import of goods. Germany had no rubber, oil, tin and tungsten. Until Operation Barbarossa the German invasion of the Soviet Union, it evaded the blockade via the Trans-Siberian Railway. After the supply route was closed at the start of Barbarossa and after the Japanese entry into the war, German and Italian ships were stranded in Japan and Japanese-occupied Singapore. The ships were used as blockade-runners, sailing to ports in occupied France after mid-1940, when Germany had taken control of the European coast from Norway to the French–Spanish border. From April 1941 to May 1942, 32 ships tried to reach France and 14 succeeded. In 1941 and 1942, German and Italian ships brought in 70,000 long tons (71,000 t) of commodities and exported 32,540 long tons (33,060 t) to Japan. From August 1942 to April 1943 fifteen ships tried to run the blockade and four got through.
After sailing from Japan, through the Pacific and the Indian Ocean to the Cape of Good Hope, blockade-runners kept radio silence and passed rearranging points at planned times. When a ship was due, U-boats and aircraft were barred from attacking merchant ships in a 200 nmi (370 km; 230 mi) lane in the mid-Atlantic, to the north-east from a line level with the Canary Islands, east of the Azores and then east to Bordeaux. Escorts were laid on through the Bay of Biscay and the ships received occasional support further out from U-boats. After the cargo has been discharged, the ship was re-fitted for the next journey.
More accommodation was built for crew and passengers, decks were reinforced, guns and ammunition stores were installed. A minimum of four scuttling charges of up to 165 lb (75 kg) were placed in the bottom of the hull and armed when the ship sailed with 7–9-minute fuzes; the crew kept their belongings ready in case they abandoned the ship. The vessel went into dry dock to have the hull cleaned to increase its speed and the ship underwent sea trials, sometimes incorporating the delivery of goods to Bassens or to another Biscay port. When ready to sail, the ship waited in the Gironde for an escort of minesweepers. Early in the war, the sailing schedule was little different from a peacetime commercial service.
The defeat of the German U-boat offensive in the Battle of the Atlantic in 1943 was followed by the last attempt by the Germans to pass blockade-runners through the Bay of Biscay to and from the Japanese empire. From May 1943 decrypts of Japanese diplomatic wireless traffic revealed to the Allies that the losses of the 1942–1943 season had not deterred the Axis from making another attempt in the autumn. Seven merchant ships were to sail from Europe carrying 50,000 long tons (51,000 t) of exports and that the Germans were building special U-boats to import 3,000 long tons (3,000 t) of goods from Japan in 1943. In July and August, photographic reconnaissance and agent reports from the French Atlantic ports that sailings for the far East were being prepared and by 6 September it was clear that seven ships were close to sailing.
On 4 October, after the blockade-runner Kulmerland had been hit by Allied bombers, a signal from the Japanese Ambassador in Berlin showed the Allies that the export programme had been cut to 35,000 long tons (36,000 t) because of the bombing. On 18 July the British and Portuguese reached a basing agreement for the Azores, which came into force on 8 October and which had the potential to deter the Axis from trying to run the blockade. On 23 October, the Germans introduced new W/T methods for signalling between U-boats and blockade-runners in the Bay of Biscay and in early November Dresden, thought to be a blockade-runner, struck a mine. The British thought that five ships were preparing to leave the Bay and that four ships were preparing to return from the Far East. Later in November, another decrypt from the Japanese Ambassador revealed that the German export programme had been reduced again, to 29,000 long tons (29,000 t). US Navy patrols in the South Atlantic were increased.
U-boats were used to transport small amounts of commodities in 1943 while bigger transport submarines were built but by winter German industry would need several shiploads of rubber and other cargoes. Despite the risks several ships would have to be despatched from Japan. There were five motor vessels in Japan and it was thought that if they left at fairly frequent intervals, the Allies might be distracted by the hunt for one and let another slip through their blockades. The ships would be on their own on the voyage but the run through the Bay of Biscay could be assisted by surface ships and aircraft. The five ships would carry 33,095 long tons (33,626 t) of rubber and other goods and sail at intervals that would allow the Biscay escort forces to meet one about 400 nmi (460 mi; 740 km) out from Bordeaux, escort it to port and then sail to meet the next one. The best time for the attempts to run the blockade would be midwinter 1943–1944.
MV Osorno (6,951 GRT, code-name Bernau, Kapitän Paul Hellmann) of the Hamburg America Line (HAPAG) with 3,882 long tons (3,944 t) of rubber, 1,797 long tons (1,826 t) of tin and 177 long tons (180 t) of tungsten, sailed from Kobe on 2 October, disguised as the British ship Prome, rounding the Cape of Good Hope on 15 November. Osorno was followed by the refrigerated cargo ship (reefer) Alsterufer (2,729 GRT, code-name Trave, Kapitan Piatek) of the Robert M. Sloman Jr. line of Hamburg, carrying 344 long tons (350 t) of tungsten; a year's worth of consumption in the German war economy. Rio Grande sailed third on 4 October 1943 from Yokohama; Weserland and Burgenland departed later in the month. Allied spies reported the arrival of the first three ships at Saigon (now Ho Chi Minh City), raising the alarm.
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Battle of the Bay of Biscay
The Battle of the Bay of Biscay or Operation Bernau, was a naval action that took place on 28 December 1943 during the Second World War during the Atlantic campaign. The engagement took place between two light cruisers of the Royal Navy and a force of destroyers and torpedo boats of the Kriegsmarine that had sailed to rendezvous with a blockade-runner and escort it to port. The British operation was part of the Allied Operation Stonewall to intercept German blockade-runners off the west coast of France. In the confused action that followed the cruisers HMS Enterprise and HMS Glasgow sank the torpedo boats T26, T25 and the destroyer Z27.
From the start of the war on 3 September 1939, the Allies proclaimed a blockade of Germany to prevent the import of goods. Germany had no rubber, oil, tin and tungsten. Until Operation Barbarossa the German invasion of the Soviet Union, it evaded the blockade via the Trans-Siberian Railway. After the supply route was closed at the start of Barbarossa and after the Japanese entry into the war, German and Italian ships were stranded in Japan and Japanese-occupied Singapore. The ships were used as blockade-runners, sailing to ports in occupied France after mid-1940, when Germany had taken control of the European coast from Norway to the French–Spanish border. From April 1941 to May 1942, 32 ships tried to reach France and 14 succeeded. In 1941 and 1942, German and Italian ships brought in 70,000 long tons (71,000 t) of commodities and exported 32,540 long tons (33,060 t) to Japan. From August 1942 to April 1943 fifteen ships tried to run the blockade and four got through.
After sailing from Japan, through the Pacific and the Indian Ocean to the Cape of Good Hope, blockade-runners kept radio silence and passed rearranging points at planned times. When a ship was due, U-boats and aircraft were barred from attacking merchant ships in a 200 nmi (370 km; 230 mi) lane in the mid-Atlantic, to the north-east from a line level with the Canary Islands, east of the Azores and then east to Bordeaux. Escorts were laid on through the Bay of Biscay and the ships received occasional support further out from U-boats. After the cargo has been discharged, the ship was re-fitted for the next journey.
More accommodation was built for crew and passengers, decks were reinforced, guns and ammunition stores were installed. A minimum of four scuttling charges of up to 165 lb (75 kg) were placed in the bottom of the hull and armed when the ship sailed with 7–9-minute fuzes; the crew kept their belongings ready in case they abandoned the ship. The vessel went into dry dock to have the hull cleaned to increase its speed and the ship underwent sea trials, sometimes incorporating the delivery of goods to Bassens or to another Biscay port. When ready to sail, the ship waited in the Gironde for an escort of minesweepers. Early in the war, the sailing schedule was little different from a peacetime commercial service.
The defeat of the German U-boat offensive in the Battle of the Atlantic in 1943 was followed by the last attempt by the Germans to pass blockade-runners through the Bay of Biscay to and from the Japanese empire. From May 1943 decrypts of Japanese diplomatic wireless traffic revealed to the Allies that the losses of the 1942–1943 season had not deterred the Axis from making another attempt in the autumn. Seven merchant ships were to sail from Europe carrying 50,000 long tons (51,000 t) of exports and that the Germans were building special U-boats to import 3,000 long tons (3,000 t) of goods from Japan in 1943. In July and August, photographic reconnaissance and agent reports from the French Atlantic ports that sailings for the far East were being prepared and by 6 September it was clear that seven ships were close to sailing.
On 4 October, after the blockade-runner Kulmerland had been hit by Allied bombers, a signal from the Japanese Ambassador in Berlin showed the Allies that the export programme had been cut to 35,000 long tons (36,000 t) because of the bombing. On 18 July the British and Portuguese reached a basing agreement for the Azores, which came into force on 8 October and which had the potential to deter the Axis from trying to run the blockade. On 23 October, the Germans introduced new W/T methods for signalling between U-boats and blockade-runners in the Bay of Biscay and in early November Dresden, thought to be a blockade-runner, struck a mine. The British thought that five ships were preparing to leave the Bay and that four ships were preparing to return from the Far East. Later in November, another decrypt from the Japanese Ambassador revealed that the German export programme had been reduced again, to 29,000 long tons (29,000 t). US Navy patrols in the South Atlantic were increased.
U-boats were used to transport small amounts of commodities in 1943 while bigger transport submarines were built but by winter German industry would need several shiploads of rubber and other cargoes. Despite the risks several ships would have to be despatched from Japan. There were five motor vessels in Japan and it was thought that if they left at fairly frequent intervals, the Allies might be distracted by the hunt for one and let another slip through their blockades. The ships would be on their own on the voyage but the run through the Bay of Biscay could be assisted by surface ships and aircraft. The five ships would carry 33,095 long tons (33,626 t) of rubber and other goods and sail at intervals that would allow the Biscay escort forces to meet one about 400 nmi (460 mi; 740 km) out from Bordeaux, escort it to port and then sail to meet the next one. The best time for the attempts to run the blockade would be midwinter 1943–1944.
MV Osorno (6,951 GRT, code-name Bernau, Kapitän Paul Hellmann) of the Hamburg America Line (HAPAG) with 3,882 long tons (3,944 t) of rubber, 1,797 long tons (1,826 t) of tin and 177 long tons (180 t) of tungsten, sailed from Kobe on 2 October, disguised as the British ship Prome, rounding the Cape of Good Hope on 15 November. Osorno was followed by the refrigerated cargo ship (reefer) Alsterufer (2,729 GRT, code-name Trave, Kapitan Piatek) of the Robert M. Sloman Jr. line of Hamburg, carrying 344 long tons (350 t) of tungsten; a year's worth of consumption in the German war economy. Rio Grande sailed third on 4 October 1943 from Yokohama; Weserland and Burgenland departed later in the month. Allied spies reported the arrival of the first three ships at Saigon (now Ho Chi Minh City), raising the alarm.
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