The SS San Mateo was a steam-powered ferry vessel notable for its long service life along the west coast of the United States. Launched in 1922, the ferry was operated by the Southern Pacific Golden Gate Ferries, primarily serving the San Francisco Bay area until 1940. As a steamship ferry, she was designed to carry both passengers and vehicles across the bay, contributing to regional transportation during the early 20th century. In 1941, the vessel was acquired by the Puget Sound Navigation Company, marking her transition to service on Puget Sound in Washington State. She continued operation there until her retirement in 1969, at which point she held the distinction of being the last operating vehicular steam ferry in the United States. Her longevity and unique steam propulsion made her an important piece of maritime history, symbolizing an era of steam-powered vehicle ferries before the widespread adoption of diesel and other propulsion methods. Following her retirement, efforts were made to restore her for display purposes in a Seattle waterfront park; however, these plans did not come to fruition. Instead, she was acquired by a Canadian businessman and towed in 1992 to the Fraser River in British Columbia. There, she became part of a collection of derelict ferries. Over the years, the SS San Mateo was partially scrapped, and remnants of her hull remain visible in the river, especially as seen in satellite imagery as of 2021. Photographs from July 2021 show her hulk partially or fully aground, leaning toward the former BC Ferries Sidney-class ferry MV Queen of Sidney. The vessel's historical significance was recognized when she was listed on the National Register of Historic Places in 1971, underscoring her importance as a maritime artifact representing the early 20th-century steam ferry era.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.