About Marooners Rock Marina
a small Marina in Alanson Michigan, located on Crooked River, between the Swing Bridge and the Locks. Boat Slips are available based on a "first to reserve" basis. Ramp Fee and Parking Boats are stored at our location on a trailer when not in use. We launch with our tractor when you arrive to use your boat. For less wait time, please schedule BEFORE 10am that day. Repair and Service Shop Propeller Repair Boat Restoration
Facilities
Boatbuilder
HauloutCOORDINATES
45.43841 N, -84.78469 E
Port Information
Telephone
Berth Sizes
< 10m
Depth at MLW
2 - 3m
Manoeuvrability
Fair
Channel Marking
Fair
Port of Entry
No
Overseas Visitor Berths
Yes
Dock Type
Fixed
Style Side To
Yes
Tidal Flow
Beware
Weather Forecast
Fri
5AM - 9AM
06 February 2026
NW 4 knots.
−7 to −4°C
Cloudy
Fri
9AM - 1PM
06 February 2026
- NW 5 knots increasing to 15 knots. Gusts up to 29 knots.
- −8 to −3°C
UV Index: 1 - Low- Cloudy
Fri
1PM - 5PM
06 February 2026
- NW 11–16 knots. Gusts up to 28 knots.
- Decreasing from −7 to −12°C
- UV Index: 0 - Low
- Cloudy