Explore the remains of Unknown 16, a mechanical excavator barge scuttled in Lake Superior’s Thunder Bay, showcasing early 20th-century dredging technology.

Explore the remains of Unknown 18, a derrick scow scuttled in Thunder Bay, showcasing unique maritime engineering and historical significance.

Explore the remains of Unknown 15, a flat-bottomed wooden scow scuttled in Thunder Bay, offering insights into mid-20th century maritime practices.

Explore the Unknown 11, a dipper dredge scuttled in Lake Superior, offering insights into industrial maritime heritage and dredging technology.

Explore the remains of the Unknown 12, a wooden dump scow scuttled in Lake Superior, offering insights into early 20th-century harbor maintenance.