Duncan City
Wooden Tug · Lost Circa 1923 · Thunder Bay & Lake Huron
A quarry tug deliberately sunk with limestone boulders after being retired from service.
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The Vessel and Her Loss
Duncan City was launched by Rand and Burger at Manitowoc in 1883. The wooden tug served the Calcite quarry after its purchase in 1918. Decommissioned as unfit for service, it was sunk with limestone boulders around 1923. Its remains lie off Rogers City.
Vessel
- 1883
- Rand and Burger
- Manitowoc, Wisconsin
- Wood
- Not established
- 19 ft
- 112 gross tons
- Motor-powered (NOAA vessel classification; engine type unspecified)
- Michigan Limestone and Chemical Company, purchased in 1918
Loss
- Circa 1923
- Intentional sinking
- Off the Calcite quarry loading docks, Rogers City, Lake Huron
- Lake Huron
- Not established
- Light (as listed by NOAA)
- Not established
- Not established
- Not established
The Wreck Today
- 15 ft
- Preserved wooden tug remains with limestone boulders used in its sinking.
- Not established
- Not established
- Within Thunder Bay National Marine Sanctuary
Position
- 45.413° N 83.762° W
- Surveyed position
- Rogers City, Michigan
NOAA GPS N45°24.787′ W83°45.733′, converted directly to decimal degrees.
Evidence
Overall confidence: Documented (88/100)
The exact casualty total and unverified vessel configuration are not established in the sources reviewed. Artwork is an interpretive reconstruction.
NOAA Thunder Bay National Marine Sanctuary — Duncan City
Type, builder, launch year and place, beam, tonnage, light cargo, circa loss year, company purchase and service, intentional sinking, GPS, depth, mooring and site remains.
























































