| 词条 | German submarine U-121 (1940) | |||||||||||||||||||||||||||||||||||||||||||||
| 释义 |
German submarine U-121 was a long-lived Type IIB U-boat built during World War II for service in Nazi Germany's Kriegsmarine. U-121 spent the entire war as a training vessel and was scuttled at the end of the conflict. U-121 was one of two Type II U-boats built at Flender Werke in Lübeck. Like her sister boat {{GS|U-120|1940|2}} (also built in Lübeck), she was originally constructed for export to China. The advent of World War II and the increased training needs of the U-Boot-Waffe led the German high command to assign U-120 and U-121 to the training command instead.[1]Built for ChinaThe Chinese Nationalist Government used 10,000,000 Marks to order two Type IIB U-boats in 1937. They also dispatched 80 men to Germany for training in submarine operations. The Japanese Government complained over this transaction, so the Chinese took their money back and the pair of Type IIB submarines joined the Kriegsmarine after the outbreak of the Second World War in Europe. They were U-120 and U-121. DesignGerman Type IIB submarines were enlarged versions of the original Type IIs. U-121 had a displacement of {{convert|279|t|LT}} when at the surface and {{convert|328|t|LT}} while submerged. Officially, the standard tonnage was {{convert|250|LT|t|abbr=on}}, however.{{sfn|Gröner|1991|pp=39–40}} The U-boat had a total length of {{convert|42.70|m|ftin|abbr=on}}, a pressure hull length of {{convert|28.20|m|ftin|abbr=on}}, a beam of {{convert|4.08|m|ftin|abbr=on}}, a height of {{convert|8.60|m|ftin|abbr=on}}, and a draught of {{convert|3.90|m|ftin|abbr=on}}. The submarine was powered by two MWM RS 127 S four-stroke, six-cylinder diesel engines of {{convert|700|PS|kW shp|-1}} for cruising, two Siemens-Schuckert PG VV 322/36 double-acting electric motors producing a total of {{convert|460|PS|kW shp|-1}} for use while submerged. She had two shafts and two {{convert|0.85|m|ft|abbr=on|0}} propellers. The boat was capable of operating at depths of up to {{convert|80|-|150|m}}.{{sfn|Gröner|1991|pp=39–40}} The submarine had a maximum surface speed of {{convert|12|kn}} and a maximum submerged speed of {{convert|7|kn}}.{{sfn|Gröner|1991|pp=39–40}} When submerged, the boat could operate for {{convert|35|-|42|nmi}} at {{convert|4|kn}}; when surfaced, she could travel {{convert|3800|nmi}} at {{convert|8|kn}}. U-121 was fitted with three {{convert|53.3|cm|in|0|abbr=on}} torpedo tubes at the bow, five torpedoes or up to twelve Type A torpedo mines, and a {{convert|2|cm|in|abbr=on}} anti-aircraft gun. The boat had a complement of twentyfive.{{sfn|Gröner|1991|pp=39–40}} References1. ^Blair (1996), 178-179. Bibliography{{Refbegin}}
|last1=Busch |first1=Rainer |last2=Röll |first2=Hans-Joachim |title=Deutsche U-Boot-Verluste von September 1939 bis Mai 1945 |trans-title=German U-boat losses from September 1939 to May 1945 |work=Der U-Boot-Krieg |volume=IV |publisher=Mittler |location=Hamburg, Berlin, Bonn |year=1999 |isbn=3-8132-0514-2 |language=German |ref=harv }}
|last1=Gröner |first1=Erich |author-link1= |author-mask1= |last2=Jung |first2=Dieter |display-authors= |last-author-amp= |last3=Maass |first3=Martin |translator-last1=Thomas |translator-first1=Keith |translator-last2=Magowan |translator-first2=Rachel |year=1991 |title=U-boats and Mine Warfare Vessels |volume=2 |work=German Warships 1815–1945 |location=London |publisher=Conway Maritime Press |isbn=0-85177-593-4 |ref=CITEREFGr.C3.B6ner1991 }}
|first=Clay |last=Blair |authorlink=Clay Blair |title=Hitler's U-Boat War: The Hunters 1939-1942 |publisher=Random House |location=New York |year=1996 |isbn=0-394-58839-8}}{{Refend}} External links
|title=The Type IIB boat U-121 |url=http://uboat.net/boats/u121.htm |last=Helgason |first=Guðmundur |website=German U-boats of WWII - uboat.net |accessdate=31 January 2015 }}
|url=http://www.u-boot-archiv.de/dieboote/u0121.html |title=U 121 |last=Hofmann |first=Markus |website=Deutsche U-Boote 1935-1945 - u-boot-archiv.de |language=German |accessdate=31 January 2015 }}{{TypeIIsubmarine}}{{May 1945 shipwrecks}}{{Subject bar | portal1=Military of Germany | portal2=Submarine | portal3=World War II }}{{use dmy dates|date=January 2015}}{{DEFAULTSORT:U0121}} 7 : German Type II submarines|U-boats commissioned in 1940|World War II submarines of Germany|1940 ships|Ships built in Lübeck|Operation Regenbogen (U-boat)|Maritime incidents in May 1945 |
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