U-boat

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U-boat

a German submarine, esp in World Wars I and II
References in periodicals archive ?
The Atlantic was still infested with U-boats often operating in wolf packs (8-20 submarines belonging to the German Kriegsmarine).
The Vindex was successful in sinking four U-boats during active service.
U-boats sank almost 5,000 ships carrying 13 million tons of cargo.
The 93 German U-boats stationed in Belgian ports downed more than 2,500 ships but were also a target themselves, with 70 of them lost at sea, killing 1,200 sailors.
Naval escorts fought off each attack, sinking three U-boats and shooting down six German torpedo bombers.
Amanda Mason, from the Imperial War Museum, said the campaign by the Axis powers to use the U-boats to gun down merchant ships intensified during the course of the war, and "almost succeeded in bringing Britain to its knees in 1917".
Their stories, invaluable in their own right, also help tell the larger stories of the Battle of the Atlantic against Germany's U-boats and of the immense efforts to keep the American and other Allied militaries well supplied.
They were used on RAF and RAAF Beaufighter aircraft based at Valley and tasked with anti U-boat patrols in the Irish Sea during the conflict.
The Germans proffered a serious threat to Allied ships by using the Luftwaffe, U-boats, and heavy surface ships based in northern Norway.
World War I saw the Germans use U-boats to devastate British shipping, nearly driving the country out of the war.
In 1940 Britain faced the deadly threat from German U-boats, which in the six months following the collapse of France in May 1940 sank three million tons of Allied shipping.
Between February and April 1917, German U-boats sank more than 500 merchant ships, with a quarter of all ships bound for Britain sunk in the month of March.