After decades of searching, researchers have discovered the wreck of the F.J. King, a “ghost ship” that sank in a storm off Wisconsin’s Door Peninsula nearly 140 years ago.

The 144-foot cargo schooner, built in 1867, went down on Sept. 15, 1886, while carrying iron ore from Michigan to Chicago.

Led by Brendon Baillod, the team used side-scan sonar to locate the surprisingly intact hull less than half a mile from a lighthouse keeper’s reported sighting, NBC News has reported.

The Wisconsin Underwater Archeology Association, which has found five wrecks in the past three years, continues to explore the Great Lakes, home to thousands of undiscovered shipwrecks threatened by invasive quagga mussels.