The Yosemite was a prominent side-wheel steamboat built in 1862 by John Gunder North’s shipyard in San Francisco. As an entirely wooden vessel, it was notably large for its construction material, measuring approximately 282-283 feet in length after a significant rebuild, with a beam of around 35 feet and a depth of hold around 13-13.6 feet. Rated at roughly 1,319 to 1,525 tons, Yosemite featured a single-cylinder "walking-beam" steam engine with a 57-inch bore and a 122-inch stroke, powering 32-foot diameter paddle wheels equipped with 10-foot long buckets, which contributed to its reputation for speed and power. Originally operated by the California Steam Navigation Company from 1863, Yosemite served primarily on routes connecting San Francisco and Sacramento, providing daily service except Sundays. Her service was marred by a catastrophic boiler explosion in October 1865, which resulted in the deaths of 58 people and numerous injuries; the explosion was linked to a supposedly safer low-pressure boiler. She was subsequently rebuilt with new boilers. In 1883, the vessel was acquired by John Irving Commodore of the Canadian Pacific Navigation Company and brought to Vancouver, where she demonstrated notable performance, including setting a speed record of four hours and twenty minutes for the 72-nautical-mile run from Vancouver to Victoria—a record unmatched until 1901. Despite her age, Yosemite operated reliably in Canadian waters, though she faced health quarantine issues in 1892 related to smallpox. In 1906, the vessel was sold to the Puget Sound Excursion Company in Seattle, where she was extensively rebuilt by John B. Mitchell. Her modifications included extending the main deck and social hall forward and installing a large dancing pavilion. She became a popular excursion vessel, carrying up to 1,000 passengers, and hosted various events, including trips with the University of Washington students and fire department charters. Yosemite's service was characterized by lively social activities, though she also experienced mishaps, such as ramming a dock and, ultimately, her wrecking. On July 9, 1909, Yosemite was wrecked in Port Orchard Narrows after veering sharply towards the shore in broad daylight, striking ground at around 14 miles per hour. Fortunately, no lives were lost, as passengers and crew were quickly rescued. Despite her wreck, Yosemite remains a significant vessel for her long service span, speed achievements, and role in regional maritime history, exemplifying the era's wooden steamer design and excursion culture.

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