Task: Text Categorization
Input (English): Context: German submarine U-848 is ...German submarine U-848 was a Type IXD2 U-boat built for Nazi Germany's Kriegsmarine during World War II. Laid down in Bremen and completed in February 1943 the boat was a long-range Type IX with four bow and two stern torpedo tubes.She was commanded throughout her brief service life by Korvettenkapitän Wilhelm Rollmann who led her through her sea trials and onto her first war patrol on 18 September 1943.
Question: The document can be classified to which topic? 
Options: 1)Village, 2)Company, 3)Artist, 4)MeanOfTransportation
Output (English): 4