Three premier marina locations. Tonka Bay Marina brings your lakestyle to life through three premier marina locations — Tonka Bay, Excelsior and Shorewood Yacht Club — with slips to accommodate 20- to 70-foot boats and a launch ramp on each site. Our crew provides prompt, professional service so you can hit the lake running. Buying a boat? We'll help you find just the right one, from pre-owned to new. Looking for fun? We offer a waterfront clubhouse and more than 12 beautiful lakefront acres so you can relax and entertain to your heart's content.