The Coast Guard will enforce special local regulations for the annual Bayview Yacht Club Port Huron to Mackinac Race. This special local regulation is necessary to safely control vessel movements in the vicinity of the race and provide for the safety of the general boating public and commercial shipping. During this enforcement period, no person or vessel may enter the regulated area without the permission of the Coast Guard Patrol Commander (PATCOM).
Source: Federal Register USCG
Link: Special Local Regulation; Marine Events; Annual Bayview Mackinac Race, Lake Huron, MI