The SS Edmund Fitzgerald was an American Great Lakes freighter that sank in a Lake Superior storm on November 10, 1975, with the loss of the entire crew of 29. When launched on June 8, 1958, she was the largest ship on North America's Great Lakes, and she remains the largest to have sunk there. The Fitzgerald was the first laker built to the maximum St. Lawrence Seaway size, which was 730 feet (222.5 m) long, 75 feet (22.9 m) wide, and with a 25 foot (7.6 m) draft. For seventeen years the Fitzgerald carried taconite iron ore from mines near Duluth, Minnesota, to iron works in Detroit, Toledo, and other Great Lakes ports. As a "workhorse," she set seasonal haul records six times, often breaking her own previous record.

Many theories, books, studies and expeditions have examined the cause of the sinking. The Fitzgerald might have fallen victim to the high waves of the storm, suffered structural failure, been swamped with water entering through her cargo hatches or deck, experienced topside damage, or shoaled in a shallow part of Lake Superior.

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