Identification & Site Information

Vessel Type

A mid‑19th-century screw‑Steamer designed for freight and passenger service across Lake Michigan—built for efficiency and speed in the growing Detroit–Chicago corridor.

Description

Built around 1855, Mary Stewart was a significant commercial vessel of her time. With a 442-ton capacity, she transported freight and possibly passengers across the Great Lakes. Noted in period accounts for her robust build, she was regarded as among the finest propeller steamships in operation.

History & Loss

In mid‑November 1866, after a decade in service, Mary Stewart left Chicago for Grand Haven under Captain Stewart. A severe autumn gale forced her ashore on Grand Haven’s south pier or nearby shoals. The vessel broke apart under wave action, becoming a Total Loss. The shock to her owner and local maritime interests was significant—records indicate a $6,000 loss, half of which was covered by insurance (pentwaterhistoricalsociety.org, facebook.com).

Final Disposition

Stranded and wrecked during the storm. The Hull was destroyed by surf, and salvage efforts focused only on retrieving machinery or fittings.

Located By & Date Found

No modern archaeological dive or GPS survey has documented her wreck. Given the breakage and sanding of the area, few remains are expected today near the harbor entrance.

Notations & Advisories

There are no modern hazards tied to her wreck site. However, the Grand Haven Breakwater area is chronically shallow and dynamic—navigation advisories apply year-round.

Conclusion

Mary Stewart was a key propeller‑Steamer in the Detroit–Chicago trade, recognized for her sturdy construction and service record. Her loss in November 1866 during a Lake Michigan gale marks one of the more notable wrecks of the era, both financially and operationally. Though not well‑documented today underwater, her demise remains part of Grand Haven maritime lore.

Suggested Keywords: propeller Steamer, Grand Haven wreck, 1866 storm loss, Detroit–Chicago commercial vessel
Suggested Categories:

  • Lake Michigan shipwrecks
  • 19th‑century steamers
  • gale-driven losses