Identification & Site Information

• Name: SAGAMORE
• Former Names: JAMES O’CONNOR (1906–1919)
• Official Number: 218114
• Date Built & Launched: 1906
• Builder: Unknown specific shipyard in Buffalo, New York
• Original Owner: Likely a private or commercial towing operator prior to acquisition by Dunbar & Sullivan Dredging Company, Buffalo, NY
• Registration Number(s): 218114
• Measurements: Length: 39 ft (11.89 m) Beam: 12 ft (3.66 m) Depth: 5 ft (1.52 m)
• Gross Tonnage: 14 tons
• Net Tonnage: 9 tons
• Date Lost: December 8, 1936
• Final Location: Approximately 5 miles off Harbor Beach, Michigan, Lake Huron

Vessel Type

The SAGAMORE was a small steel-hulled workboat, originally built as a Tug named JAMES O’CONNOR in 1906. After being renamed in 1919, she served primarily in support roles for dredging and marine construction projects, typical of the auxiliary vessels operated by companies like Dunbar & Sullivan Dredging Company.

Description

At just 39 feet in length, with a 12-foot beam and 5-foot Draft, the SAGAMORE was a compact but durable Diesel-powered workboat. Her steel construction made her resilient for operations in challenging Great Lakes conditions, and her shallow Draft allowed her to operate effectively in harbors, rivers, and nearshore dredging sites. Initially steam-powered, she was converted to Diesel propulsion, which provided improved fuel efficiency and reliability for long-term workboat service.

History

The vessel began her career as the JAMES O’CONNOR, built in Buffalo, New York, in 1906. She operated as a Tug, likely performing towing, harbor assistance, and support roles for commercial maritime operations. In 1919, she was renamed SAGAMORE, marking her transition to a new phase under the ownership of Dunbar & Sullivan Dredging Company, a major player in marine construction and dredging across the Great Lakes.

As part of Dunbar & Sullivan’s fleet, the SAGAMORE likely served in support of dredging projects, towing equipment, transporting supplies, and assisting with the positioning of dredging scows and barges. These workboats were critical to maintaining navigational channels, particularly in busy port areas such as Buffalo, Detroit, and Chicago.

Final Disposition

On December 8, 1936, the SAGAMORE Foundered approximately 5 miles off Harbor Beach, Michigan, in Lake Huron. The loss occurred during a storm, though specific details regarding the circumstances are scarce. Harbor Beach is known for its large Breakwater and lighthouse, which were constructed to provide shelter from the often treacherous conditions on Lake Huron’s open waters.

The area where the SAGAMORE was lost is exposed to sudden weather changes, and small workboats like hers were particularly vulnerable to high winds, heavy seas, and shifting ice conditions during winter months. There is no detailed record of the exact cause of her sinking, nor is it clear if there were any casualties, as loss-of-life information remains undocumented.

Located By & Date Found

No specific discovery details are available for the wreck of the SAGAMORE. Given the vessel’s small size and the passage of time, it is possible the wreck has either not been located or remains unconfirmed.

NOTMARs & Advisories

No current Notices to Mariners (NOTMARs) or navigational hazards are officially listed for the area 5 miles off Harbor Beach, Michigan, relating specifically to the SAGAMORE. However, mariners should always exercise caution in Lake Huron’s nearshore areas, especially near known reefs and breakwaters.

Resources & Links

• Great Lakes Vessels Database – Bowling Green State University
• Maritime History of the Great Lakes
• David Swayze Shipwreck File
• Harbor Beach Lighthouse Preservation Society

Conclusion

Though a small vessel, the SAGAMORE played an important role in the maritime infrastructure of the Great Lakes, supporting dredging and construction projects vital to maintaining safe navigation. Her loss in 1936 highlights the risks faced by workboats operating in harsh winter conditions on Lake Huron. While her final resting place remains uncertain, the SAGAMORE’s history contributes to the broader story of Great Lakes maritime commerce and the unsung vessels that supported it.