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  2. Black May (1943) - Wikipedia

    en.wikipedia.org/wiki/Black_May_(1943)

    In May 1943, U-boat strength reached its peak, with 240 operational U-boats of which 118 were at sea, yet the sinking of Allied ships continued to decline. [2] May 1943 also had the greatest losses suffered by U-boats up to that time, with 41 being destroyed, 25 per cent of the operational U-boats. [3]

  3. Mediterranean U-boat campaign of World War II - Wikipedia

    en.wikipedia.org/wiki/Mediterranean_U-boat...

    The Royal Navy boarded the sinking U-boat and recovered German code documents before U-559 sank. [38] The Second Battle of El Alamein prompted a concentration of U-boats in the western Mediterranean, in anticipation of Allied amphibious invasion. Five U-boats made contact with Operation Torch convoys, and two wolfpacks assembled near the ...

  4. Battle of the Atlantic - Wikipedia

    en.wikipedia.org/wiki/Battle_of_the_Atlantic

    The Battle of the Atlantic, the longest continuous military campaign [11] [12] in World War II, ran from 1939 to the defeat of Nazi Germany in 1945, covering a major part of the naval history of World War II. At its core was the Allied naval blockade of Germany, announced the day after the declaration of war, and Germany's subsequent counter ...

  5. German submarine U-352 - Wikipedia

    en.wikipedia.org/wiki/German_submarine_U-352

    German submarine U-352 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 11 March 1940, at the Flensburger Schiffbau-Gesellschaft yard at Flensburg , launched on 7 May 1941, and commissioned on 28 August 1941, under the command of Kapitänleutnant Hellmut Rathke.

  6. ON/ONS convoys - Wikipedia

    en.wikipedia.org/wiki/ON/ONS_convoys

    Eight ships were sunk, and one U-boat damaged, over a four day battle [4] Convoy ON 92 lost seven ships over a three-day period; Convoy ON 122 was the first to illustrate the defensive value of HF/DF and type 271 centimeter-wavelength radar. [5] Convoy ON 127 was the only North Atlantic trade convoy of 1942 or 1943 where all U-boats deployed ...

  7. U-boat - Wikipedia

    en.wikipedia.org/wiki/U-boat

    U-995, a typical VIIC/41 U-boat on display at the Laboe Naval Memorial. U-boats were naval submarines operated by Germany, particularly in the First and Second World Wars.The term is an anglicized version of the German word U-Boot ⓘ, a shortening of Unterseeboot (under-sea boat), though the German term refers to any submarine.

  8. Gulf of Finland U-boat campaign - Wikipedia

    en.wikipedia.org/wiki/Gulf_of_Finland_U-boat...

    On 15 July 1944, U-679 was attacked by small Soviet boats: during a gunnery battle, the motor torpedo boat TK-57 suffered damages and two of her torpedoes barely missed the submarine. U-679 fled under cover of Finnish ground artillery. On 18 July 1944, U-479 damaged the Soviet submarine chaser MO-304 (later repaired).

  9. German submarine U-552 - Wikipedia

    en.wikipedia.org/wiki/German_submarine_U-552

    German submarine U-552 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 1 December 1939 at Blohm & Voss in Hamburg as yard number 528, launched on 14 September 1940, and went into service on 4 December 1940.