45° 50' 40" N/84° 36' 42" W. Total slips: 76, seasonal slips: 13 and
transient slips: 63. Radio channel: 9. Season dates are late May to Mid-September. Off season phone: (906) 627-9011. Amenities include restrooms, showers, electricity, water, pump-out, dog run, trash area, payphones with dataports and immigration station. Wireless Internet access available for a fee. The Mackinac Island State Harbor is a designated Michigan Clean Marina.