TopSide Marinas, a family-owned company that acquires and operates marinas throughout the United States, has acquired Bay Harbor Marina, a full-service marina located along the Saginaw River in Bay City.

The acquisition marks TopSide Marinas’ first entry into the Michigan market. Established in 1967, Bay Harbor Marina spans 80 acres and features 400 wet slips, 100 dry stack slips, and more than 500 winter storage spaces, including over 120,000 square feet of heated indoor storage. On-site services include fuel docks, a ship store, mechanical and electronic repair, fiberglass and paint services, haul-out capabilities, and both indoor and outdoor storage options.

“We are excited to enter the Michigan market with our first marina, Bay Harbor, welcoming new team members to the TopSide community as well as our newest boating enthusiasts,” said Ryan Skiles, Regional VP at TopSide Marinas. Following its November 2025 acquisition of Pikes Bay Marina in Bayfield, Wisconsin, TopSide Marinas continues its U.S. expansion.

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