Thunder Bay National Marine Sanctuary


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GPS Location: N45°11.870' W83°20.030'
Depth: 8 Feet
Wreck Length: 182 Feet Beam: 27 Feet
Gross Tonnage: 674 Cargo: Pig Iron
Built: 1853 by Bidwell and Banta at Buffalo, New York
Wrecked: November 15, 1867
Description: Carrying a load of pig iron, the propeller Portsmouth went ashore at Middle Island during a strong gale. The wreck is immediately adjacent to the Middle Island Life Saving Station. Only its stern survives with engine mounts, sternpost and deadwood easily visible from the surface.


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wreck coordinates Great Lakes Maritime Heritage Center