United States lightship Swiftsure (LV-83)

Light Vessel Number 83 (LV 83) Swiftsure is a lightship and museum ship owned by Northwest Seaport in Seattle, Washington. Launched in 1904 at Camden, New Jersey and in active service until 1960 after serving on all five of the American west coast's lightship stations, it is the oldest surviving lightship in the United States, the only one still fitted with its original steam engine, and the last lightship with wooden decks. LV 83 was designated a National Historic Landmark in 1989, and has been undergoing major restoration since 2008.

As built, LV 83 was one of the nation's new third generation lightships, with an all steel hull, wooden decks, and a powerful double expansion steam engine. It measured 112 feet (34 m) on the keel, 133 feet overall, with a beam of 28 feet (9 m) and a draft of 12 feet (4 m), and was rated at 668 tons. The beakhead roller on the bow was later removed, reducing length overall to 129 feet 6 inches. The ship's aids to navigation currently include a 1,000 watt beacon light, a 140 decibel Diaphone horn, and a foredeck fog bell. At the time of launching, however, the beacon consisted of a chandelier of three oil lamps that could be hoisted up the masts from the deck. These were originally powered by whale oil, then first converted to kerosene, and finally electrified in 1930. For propulsion, LV 83 was driven by a single 8 foot diameter screw powered by a 375 horsepower marine steam engine, originally fed by a pair of coal fired fire tube Scotch boilers. The ship had two coal bunkers, each with a capacity of 75 tons, and freshwater tankage for more than 11,000 gallons. In 1934, the Scotch boilers were replaced with modern oil fired watertube boilers, improving endurance, speed of bunkering, and speed in raising steam while simultaneously reducing the size of the boiler room crew. During active service, LV 83's normal crew complement was 15, with 10 on duty at any given time. The others were on shore leave rotation. Crew size did fluctuate slightly with technological modifications such as the labor saving oil fired boilers or the successive waves of new electronic devices like radio and radar. During World War II, the ship's complement increased to more than 30 to man the guns fitted aboard for war duty.

LV 83 was launched in Camden, New Jersey in 1904, and was deployed to the West Coast to serve on the Blunt's Reef lightship station. Since the Panama Canal would not be completed for another decade, LV 83 (accompanied by LV 76) had to steam around the tip of South America and north to San Francisco to reach its first station assignment at Blunts Reef off Crescent City, California. While there, the ship rescued 150 people from the steamer Bear after that ship ran aground on the reef in dense fog. Formerly known as Relief, LV 83 had numerous names on its sides, all of which indicated the location of its station. Swiftsure refers to the Swiftsure Bank near the entrance to the Strait of Juan de Fuca, which separates Washington from Vancouver Island. She also guided ships near Umatilla Reef and the Columbia River Bar. The ship was decommissioned in 1960, and purchased by Northwest Seaport in 1966. It is listed on the National Register of Historic Places, was declared a National Historic Landmark in 1989, and is on the Washington State Heritage Register. LV 83 is docked on Lake Union, in Seattle, Washington, where a long running restoration was begun in 2008. LV 83 is open to visitors on most summer weekends, or by appointment.