For the Allied powers, the battle had three objectives: blockade of the Axis powers in Europe, security of Allied sea movements, and freedom to project military power across the seas. As in 1941, help from Canada’s expanding military came in a timely fashion in 1942 as Canadian naval and air forces filled the void left in the North Atlantic by the departure of U.S. forces to the Caribbean and Pacific. Allies lost around 3,500 merchant ships and 175 warships in the fighting, along with roughly 72,000 sailors killed. The Battle of the Atlantic took place throughout the northern region of the Atlantic Ocean. Officers on the bridge of a destroyer, escorting a large convoy of ships keep a sharp look out for attacking enemy submarines during the Battle of the Atlantic… Worse followed that winter. The RCN and RCAF also paid a high toll in the Battle of the Atlantic. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Employing 1… During six years of naval warfare, German U-boats and warships – and later Italian submarines – were pitted against Allied convoys transporting military equipment and supplies across the Atlantic to Great Britain and the Soviet Union. Come join the expedition, as we learn more about the Battle of the Atlantic and the historic shipwrecks that litter the ocean floor along the coast of the Outer Banks. Corrections? The Germans also developed technological advancements like snorkel tubes that allowed U-boats to run their diesel engines while travelling underwater and on-board radar that increased their submarines’ capabilities. From the German perspective, with the conquest of western Europe complete, knocking Britain out of the war by attacking its trade seemed a manageable objective. U-806 sank the … In March and April 1941, nearly half a million tons of Allied shipping had been sent to the bottom. German casualties numbered 783 U-boats and around 30,000 sailors (75% of the U-boat force). On October 14, 1942, 136 people died when the ferry SS Caribou was sunk as it crossed from Nova Scotia to Newfoundland. For five years, eight months and five days, Allied and Axis powers fought for control of vital shipping routes across the Atlantic Ocean. The crisis peaked in March, when the Allies’ top-secret Ultra program suffered a lapse in intercepting and decrypting German communications for mid-ocean U-boats. In September 1939, Germany immediately sought to capitalize on Britain’s dependence on imports of food and raw materials. 1-800-268-7708, TDD/TTY: The Battle of the Atlantic was the longest continuous battle of the Second World War and one in which Canada played a central role. VAC to receive services. Assistance Service. Canada’s Merchant Navy, along with the Royal Canadian Navy (RCN) and the Royal Canadian Air Force (RCAF), played a key role in the Allied efforts. However, the introduction of new long-range planes helped reduce the hazards of this dangerous portion of the run. families, and caregivers and is provided at no cost. Furthermore, Canada played an important role in directing Allied efforts in the Battle of the Atlantic. It had been costly to the Allies. During that period the Anglo-French coalition drove German merchant shipping from the sea and established a fairly effective long-range blockade, while the German navy attempted to inflict some measure of damage on Allied forces at sea. Please refer to the appropriate style manual or other sources if you have any questions. No fewer than 2,603 merchant ships had been sunk, totalling over 13. The Axis Powers wanted to stop them. Canadians established the first convoys in the American zone, and American convoys soon followed. Merchant Navy personnel from Canada and Newfoundland were killed. It was the longest continuous campaign of the war, and arguably the most important. . Indeed, the central area of the ocean beyond aircraft range became known as the “Black Pit” as that was where many of the heaviest convoy losses occurred. Runyan, Timothy J. and Jan M. Copes, eds. Improving spring weather by April, modern radar equipment, repenetration of the U-boat codes, new escort aircraft carriers, very-long-range patrol aircraft, and aggressive tactics had resulted in a major defeat of Germany’s submarine fleet by May. Updates? The Battle of the Atlantic played a very significant part in World War Two. The Axis, in turn, hoped to frustrate Allied use of the Atlantic to wage war. Panzerschreck Magazine #4. After the Wehrmacht attacked it in June 1941, the U.S.S.R repeatedly asserted its dire need for imported equipment and supplies. Their successes continued as nearly 400 Allied ships were sunk between January and July 1942, while only seven U-boats were lost. As a result, Allied merchant shipping losses spiked between January and June 1942, when more tonnage was lost off the U.S. coast than the Allies had lost during the previous two and a half years. It began on the first day of the war in Europe in September 1939 and continued until May 1945. Allied scientists responded by inventing a noise-making device that was towed behind a ship to divert the torpedoes. Frigate Her Majesty's Canadian Ship Swansea. The Allied campaign (1942–43) in the Mediterranean depended almost entirely upon seaborne supply shipped through submarine-infested waters. Get a Britannica Premium subscription and gain access to exclusive content. Both sides kept trying to get the upper hand in technology and tactics during the Battle of the Atlantic. No fewer than 2,603 merchant ships had been sunk, totalling over 13. During World War II both the Allies and the Axis Powers fought for control of the Atlantic Ocean. The Battle of the Atlantic was one of the most important fronts in World War II. German submarines (known as U-boats) were the main threat to the merchant marine and the Allied navies. Ring in the new year with a Britannica Membership, https://www.britannica.com/event/Battle-of-the-Atlantic, British Broadcasting Corporation - The Battle of the Atlantic, History Learning Site - Battle of the Atlantic, Learn how the Third Reich utilized U-boats in the Battle of the Atlantic to destroy Allied supply convoys. This year will mark the passing of a full century since the end of World War I. The battle for control of Atlantic sea routes during World War II ran from the declaration of war on September 3, 1939, until VE Day on May 8, 1945. At that critical juncture, the United States, though still technically a nonbelligerent, assumed a more active role in the Atlantic war. The battle began on the opening day of the war in September 1939 and ended almost six years later with Germany’s surrender in May 1945. (Photo: Library and Archives Canada PA-54474). . Aircraft were effective in protecting merchant ships, but the Allied planes used earlier in the war did not have enough range to offer air cover for the convoys all the way across the Atlantic. The main battleground of the Battle of the Atlantic was the vital sea lanes of the North Atlantic. The Montréal-bound passenger ship had 1,400 passengers and crew members on board; 118 were killed (including four Canadians). More than 1,600 Merchant Navy personnel from Canada and Newfoundland were killed. Indeed, percentage-wise, their casualty rate was higher than those of any of Canada’s fighting services during the Second World War—one out of every seven Merchant Navy sailors who served was killed or wounded. The Battle of the Atlantic brought the war to Canada’s doorstep, with U-boats torpedoing ships within sight of Canada’s East Coast and even in the St. Lawrence River. Toll-free: 1-866-522-2122 1-800-567-5803. Canada entered the war as a small country with an even smaller navy. The war against the U-boats from 1939 to 1945 was the formative experience for the Royal Canadian Navy (RCN) in the twentieth century. Storyline In the European Theatre of World War II, in no other factor was Britain closer to defeat than in the Battle of the Atlantic. (Photo: Library and Archives Canada PA-107941), This publication is available upon request in alternate formats. Early Battles The Battle of the Atlantic was “the only thing that ever frightened me.” Boulder: Westview Press, 1994. To Die Gallantly, The Battle of the Atlantic. 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