Task: Text Categorization
Input (English): Context: USS Opportune (ARS-41) was a Bolster-class rescue and salvage ship acquired by the U.S. Navy during World War II. Her task was to come to the aid of stricken vessels.Opportune was laid down 13 September 1944 by Basalt Rock Company in Napa California; launched 31 March 1945; sponsored by Mrs. Kenneth Sanger; and commissioned at Mare Island California 5 October 1945 Lt. Comdr. Charles L. Knopp in command.
Question: The document can be classified to which topic? 
Options: 1)Company, 2)Artist, 3)MeanOfTransportation, 4)Plant, 5)Village
Output (English): 3