The SS Delphine is a historically significant steam yacht launched on April 2, 1921. Originally commissioned by Horace E. Dodge, co-founder of Dodge Brothers, the vessel was constructed as a luxurious private yacht and remains notable for its preservation in near-original condition. The vessel measures approximately 245 feet in length, with a sleek, classic design characteristic of the early 20th-century American steam yachts. Power was initially supplied by three Babcock & Wilcox boilers, which powered two quadruple-expansion steam engines producing 1,500 horsepower. In a 2003 refit, Delphine was re-equipped with two modern water-tube boilers operating at 20 bars (290 psi). The larger boiler could evaporate 14 metric tons (31,000 lbs) of steam per hour, and the smaller 4 metric tons (8,800 lbs), providing steam to her original engines. Remarkably, Delphine is the only large American-built steam yacht from her era still in her original condition with her original steam engines still operational. Her service history includes a dramatic early incident when she caught fire and sank in New York in 1926. She was recovered after four months, restored, and remodeled at a cost of $750,000. The yacht endured further damage in 1940 after running aground in the Great Lakes but was repaired. During World War II, she was acquired by the U.S. Navy in January 1942, converted into a gunboat designated USS Dauntless (PG-61), and served as the flagship for Admiral Ernest King. She was equipped with a pair of 3-inch guns, six .50 caliber machine guns, and a Marine detachment. Post-war, the vessel was returned to civilian service, reverting to her original name, Delphine. She is reputed to have hosted President Franklin D. Roosevelt during the drafting of the Yalta accords. Over the years, she changed ownership multiple times, with significant restorations, including a comprehensive $60 million renovation by Jacques Bruynooghe to restore her to her 1921 appearance and condition. Rechristened by Princess Stéphanie of Monaco in 2003, Delphine remains a rare survivor of her class, embodying maritime heritage and luxury of the early 20th century.

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