Map Sunset Bay Marina 5825 Loomis Road, Unionville, MI 48767 Add To Trip WebsiteEmailPhone: (989) 674-2668 Description The best boating, launch and fishing in the area can be found out of this port. We also have storage for your campers. We have the shortest channel that leads to the deeper water on the Bay. Videos TripAdvisor® Traveler Reviews More To Explore Categories: Boating Recreation City: Unionville Region: East Central Although the MEDC uses reasonable efforts to maintain the accuracy of the website content, it is not represented to be error free. Read legal information.