Thunder Bay National Marine Sanctuary


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GPS Location: N45° 01.996’ W83° 11.988’
Depth: 18 Feet
Wreck Length: 160 Feet Beam: 30 Feet
Gross Tonnage: 572 Cargo: Coal
Launched: 1872 by Linn and Craig at Gibraltar, Michigan
Wrecked: November 23, 1907
Description: Built as the double-decked bulk freighter Ira H. Owen, the ship was rechristened Monohansett in 1882.  Ten years later, it was rebuilt as a single-decked lumber carrier.  On November 23, 1907, the ship burned to the water's edge at Thunder Bay Island.  Most of the crew lost their personal belongings and some suffered minor burns, but there was no loss of life because the ship was near the island’s Life Saving Station. Today, the Monohansett’s wreck lies in three sections.  The stern portion has hull features, propeller, and shaft all in place, and the boiler is nearby. 

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wreck coordinates Great Lakes Maritime Heritage Center