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USS ''Pennsylvania R. R. No. 9'' (SP-679), also known as USS ''Penn R. R. No. 9'' (SP-679) and USS ''P.R.R. No. 9'' (SP-679), was a United States Navy armed tug and minesweeper in commission from 1917 to 1919. ''Pennsylvania R. R. No. 9'' was built as a commercial tug of the same name by William R. Trigg at Richmond, Virginia, in 1904. She also was listed as ''Penn R. R. No. 9'' and ''P.R.R. No. 9''. In September 1917, the U.S. Navy acquired her from her owner, the Pennsylvania Railroad, for use during World War I. Delivered to the Navy on 18 September 1917 and assigned the section patrol number 679, she was commissioned on 22 September 1917 as USS ''Pennsylvania R. R. No. 9'' (SP-679), being listed also as USS ''Penn R. R. No. 9'' and USS ''P.R.R. No. 9''. After fitting out, ''Pennsylvania R. R. No. 9'' took up tug and minesweeping duties in New York Harbor for the rest of World War I and for several weeks after its conclusion. ''Pennsylvania R. R. No. 9'' was returned to the Pennsylvania Railroad on 2 January 1919, having remained active in naval service until that day. ==References== * *(Department of the Navy Naval History and Heritage Command Online Library of Selected Images: Civilian Ships: ''P.R.R. No.9'' (American Harbor Tug, 1904). Also known as ''Pennsylvania R.R. No.9''. Served as USS ''P.R.R. No.9'' (SP-679) in 1917-1919 ) *(NavSource Online: Section Patrol Craft Photo Archive Pennsylvania R. R. No. 9 (SP 679) ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「USS Pennsylvania R. R. No. 9 (SP-679)」の詳細全文を読む スポンサード リンク
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