- References
{{Use dmy dates|date=November 2012}}{{Infobox ship image| Ship image=USS Whitecap (SP-340).jpg | Ship caption=USS Whitecap
}}{{Infobox ship career | Hide header= | Ship country=United States | 1917}} | Ship name=USS Whitecap | Ship namesake=Previous name retained | Ship owner= | Ship operator= | Ship registry= | Ship route= | Ship ordered= | Ship awarded= | Ship builder=Manitowoc Shipbuilding Company, Manitowoc, Wisconsin | Ship original cost= | Ship yard number= | Ship way number= | Ship laid down= | Ship launched= | Ship sponsor= | Ship christened= | Ship completed=1916 | Ship acquired=28 April 1917 | Ship commissioned=8 May 1917 | Ship recommissioned= | Ship decommissioned=11 March 1919 | 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 owners 1 April 1919 | Ship status= | Ship notes=Operated as commercial fishing trawler Whitecap 1916-1917 and from 1919 | Ship badge=
}}{{Infobox ship characteristics | Hide header= | Header caption= | Ship class= | Ship type=Patrol vessel | Ship tonnage=303 tons | Ship displacement= | Ship tons burthen= | 143|ft|m|abbr=on}} | 22|ft|8|in|m|abbr=on}} | Ship height= | Ship draught= | 13|ft|5|in|m|abbr=on}} (aft) | Ship depth= | Ship hold depth= | Ship decks= | Ship deck clearance= | Ship ramps= | Ship ice class= | Ship power= | Ship propulsion= | Ship sail plan= | Ship speed=11 knots | Ship range= | Ship endurance= | Ship test depth= | Ship boats= | Ship capacity= | Ship troops= | Ship complement=18 | Ship crew= | Ship time to activate= | Ship sensors= | Ship EW= | Ship armament=*1 × 6-pounder gun- 1 × 3-inch (76.2-millimeter) gun
| Ship armour= | Ship armor= | Ship aircraft= | Ship aircraft facilities= | Ship notes=
}} | USS Whitecap (SP-340) was a United States Navy patrol vessel in commission from 1917 to 1919. Whitecap was built in 1916 as a commercial fishing trawler of the same name by Manitowoc Shipbuilding Company at Manitowoc, Wisconsin. The U.S. Navy acquired Whitecap from the Bay State Fisheries Company of South Boston, Massachusetts, on 28 April 1917 for World War I service as a patrol vessel, and commissioned her as USS Whitecap (SP-340) on 8 May 1917. Initially attached to the 1st Naval District in northern New England, Whitecap began operations out of the 2nd Naval District in southern New England in late February 1918. During her naval career, Whitecap operated primarily out of Newport, Rhode Island, patrolling between that base and New London, Connecticut. Occasionally, her coastal patrols took her to Nantucket Island off Massachusetts, Block Island off Rhode Island, and Montauk Point, Long Island, New York, as well as to New York City. When not at sea keeping tabs on the coastwise traffic of naval and merchant vessels, Whitecap performed local tow and escort service out of Newport. Decommissioned at Boston, Massachusetts, on 11 March 1919, Whitecap was returned to the Bay State Fisheries Company on 1 April 1919. Her name was struck from the Navy List, and Whitecap resumed her peacetime fishing pursuits References- {{DANFS|http://www.history.navy.mil/research/histories/ship-histories/danfs/w/whitecap.html}}
- Department of the Navy Naval Historical Center Online Library of Selected Images: U.S. Navy Ships: USS Whitecap (SP-340), 1917-1919
- NavSource Onlline: Section Patrol Craft Photo Archive Whitecap (SP 340)
{{DEFAULTSORT:Whitecap (SP-340)}} 4 : World War I patrol vessels of the United States|Patrol vessels of the United States Navy|Ships built in Wisconsin|1916 ships |