- References
{{Infobox ship image| Ship image=Tug P.R.R. No. 9.jpg | Ship caption=Pennsylvania R. R. No. 9, also known as Penn R. R. No. 9 and P.R.R. No. 9, as a commercial tug sometime between 1904 and 1917.
}}{{Infobox ship career | Hide header= | Ship country=United States | 1917}} | Ship name=USS Pennsylvania R. R. No. 9, also USS Penn R. R. No. 9 and USS P.R.R. No. 9 | Ship namesake=Previous name retained | Ship owner= | Ship operator= | Ship registry= | Ship route= | Ship ordered= | Ship awarded= | Ship builder=William R. Trigg, Richmond, Virginia | Ship original cost= | Ship yard number= | Ship way number= | Ship laid down= | Ship launched= | Ship sponsor= | Ship christened= | Ship completed=1904 | Ship acquired=18 September 1917 | Ship commissioned=22 September 1917 | Ship recommissioned= | Ship decommissioned= | Ship maiden voyage= | Ship in service= | Ship out of service= | Ship renamed= | Ship reclassified= | Ship refit= | Ship struck= | Ship reinstated= | Ship homeport= | Ship identification= | Ship motto= | Ship nickname= | Ship honours= | Ship honors= | Ship captured= | Ship fate=Returned to owner 2 January 1919 | Ship status= | Ship notes=Operated as commercial tug Pennsylvania R. R. No. 9, Penn R. R. No. 9, and P.R.R. No. 9 1904-1917 and from 1919 | Ship badge=
}}{{Infobox ship characteristics | Hide header= | Header caption= | Ship class= | Ship type=Tug and minesweeper | Ship tonnage= | Ship displacement=223 tons | Ship tons burthen= | 92|ft|m|abbr=on}} | 22|ft|m|abbr=on}} | Ship height= | Ship draught= | 13|ft|m|abbr=on}} | Ship depth= | Ship hold depth= | Ship decks= | Ship deck clearance= | Ship ramps= | Ship ice class= | Ship power= | Ship propulsion= | Ship sail plan= | Ship speed=10 knots | Ship range= | Ship endurance= | Ship test depth= | Ship boats= | Ship capacity= | Ship troops= | Ship complement=19 | Ship crew= | Ship time to activate= | Ship sensors= | Ship EW= | Ship armament=2 × 1-pounder guns | Ship armour= | Ship armor= | Ship aircraft= | Ship aircraft facilities= | Ship notes=
}} | 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- {{DANFS|http://www.history.navy.mil/danfs/p4/pennsylvania_r_r_no_9.htm}}
- 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)
{{DEFAULTSORT:Pennsylvania R. R. No. 9 (SP-679)}} 6 : Auxiliary ships of the United States Navy|World War I auxiliary ships of the United States|Minesweepers of the United States Navy|World War I minesweepers of the United States|Ships built in Richmond, Virginia|1904 ships |