The Steel Electric-class ferries are a class of auto/passenger ferries that became part of the Washington State Ferry System when Puget Sound Navigation Company was acquired in 1951. They were built in San Francisco Bay for service on Southern Pacific and Northwestern Pacific Railroad routes across the bay.

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 a fleet of 21 vessels that are able to carry passengers and vehicles.