when was it launched ?
June 7, 1958
SS Edmund Fitzgerald
When launched on June 7, 1958, she was the largest ship on North America's Great Lakes, and she remains the largest to have sunk there.

when did the wreck of the edmund fitzgerald happen November 10, 1975 what is it ? It was an American Great Lakes freighter ship.
wiki:19464105
SS Edmund Fitzgerald [SEP] Introduction
Shortly after 7:10 p.m., "Edmund Fitzgerald" suddenly sank in Canadian (Ontario) waters deep, about from Whitefish Bay near the twin cities of Sault Ste. Marie, Michigan, and Sault Ste. Marie, Ontario—a distance "Edmund Fitzgerald" could have covered in just over an hour at her top speed.