Port Townsend–Keystone Ferry

Washington State Ferries

Locale	Washington
Waterway	Puget Sound, Salish Sea
Transit type	Ferry
Owner	Washington State Department of Transportation
Operator	Washington State Department of Transportation
Began operation	June 1, 1951 (1951-06-01)
No. of lines	10
No. of vessels	23 (1 under construction)
No. of terminals	20
Daily ridership	61,745 (2013)
Website	wsdot.wa.gov/ferries

Washington State Ferries (WSF) is a government agency that operates automobile and passenger ferry service in the U.S. state of Washington as part of the Washington State Department of Transportation. It runs ten routes serving 20 terminals located around Puget Sound and in the San Juan Islands, designated as part of the state highway system. The agency maintains the largest fleet of ferries in the United States at 22 vessels, carrying 24.2 million passengers in 2016. As of 2016^[update], it was the largest ferry operator in the United States, and the fourth-largest ferry system in the world.

The ferry system has its origins in the "mosquito fleet", a collection of small steamer lines serving the Puget Sound area during the later part of the nineteenth century and early part of the 20th century. By the beginning of the 1930s, two lines remained: the Puget Sound Navigation Company (known as the Black Ball Line) and the Kitsap County Transportation Company. A strike in 1935 forced the KCTC to close, leaving only the Black Ball Line.

Toward the end of the 1940s the Black Ball Line wanted to increase its fares, to compensate for increased wage demands from the ferry workers' unions, but the state refused to allow this, and so the Black Ball Line shut down. In 1951, the state bought nearly all of Black Ball's ferry assets for $5 million (Black Ball retained five vessels of its fleet). The state intended to run ferry service only until cross-sound bridges could be built, but these were never approved, and the Washington State Department of Transportation runs the system to this day.

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