- Type
- Harbour
Small boatyard and marina at 7116 McDonald Street on Harsens Island, in the St Clair Flats delta of Lake St Clair.
Guide
Approach and anchoring
On the South Channel of the St Clair River delta. Harsens Island is reached only by the Champion Auto Ferry from Algonac across the North Channel. Maximum vessel size 32 ft. Heavy freighter traffic on the main St Clair River shipping channel north of the island.
Practical
One transient berth, 30-amp shore power, heads. Hull and engine repair on site. Hauling, indoor and outdoor winter storage. Family-run yard operating since 1953. Phone 810-748-3011.
Ashore
St Clair Flats State Wildlife Area covers most of the island, the largest freshwater delta in North America. Marshes, waterfowl, and a network of small roads suited to cycling. Sans Souci hamlet within walking distance.
Key facts
- Type
- Harbour
- Coordinates
- 42.55811, -82.61410 (42°33.49'N 82°36.85'W)
- Town
- Harsens Island
- Country
- United States
- Phone
- +18107483011
- Updated
- July 7, 2026
Getting there
Schneider Marine Service lies at 42°33.49'N 82°36.85'W, that is 42.55811, -82.61410 in decimal degrees.
Boaters' reviews
No reviews yet. Be the first to share your experience of Schneider Marine Service.
Write a reviewExplore the region
- United States
- Great Lakes
- New England
- Chesapeake Bay
- Carolinas and Georgia
- Florida
- California
- Pacific Northwest
- Alaska
Nearby cities
The free boat navigation app
Official nautical charts, marine weather, GPS and 50,000+ marinas and anchorages with reviews. All in one app, ready to sail.


