Section 165.932 - Safety Zone; Ohio Street Beach Swim Course, Lake Michigan, Chicago Harbor, Chicago, IL(a)Location. All U.S. navigable waters of Lake Michigan bound by a line drawn from 41°53.7767' N, 087°36.48' W then North to 41°53.9517' N, 087°36.505' W then Northwest to 41°54.1533' N, 087°36.6933' W then Southwest to 41°54.065' N, 087°37.1517' W then Southeast to 41°53.6033' N, 087°36.8333' W then East to 41°53.6317' N, 087°36.7017' W and then along the shoreline back to the point of origin (NAD83).(b)Enforcement period. The safety zone established by this section will be enforced only upon notice by the Captain of the Port, Lake Michigan. The Captain of the Port, Lake Michigan will publish notices of enforcement in accordance with 33 CFR 165.7(a) and in a manner that provides as much notice as possible. The primary method of notification will be through publication to the Federal Register. The Captain of the Port, Lake Michigan, may also provide notice through other means, such as Broadcast Notice to Mariners, Local Notice to Mariners, local news media, distribution in leaflet form, and on-scene oral notice.(c)Regulations.(1) In accordance with the general regulations in § 165.23 of this part, entry into, transiting, or anchoring within this safety zone is prohibited unless authorized by the Captain of the Port, Lake Michigan or a designated on-scene representative.(2) This safety zone is closed to all vessel traffic, except as may be permitted by the Captain of the Port, Lake Michigan or a designated on-scene representative.(3) The "on-scene representative" of the Captain of the Port, Lake Michigan is any Coast Guard commissioned, warrant or petty officer who has been designated by the Captain of the Port, Lake Michigan to act on his or her behalf.(4) Vessel operators desiring to enter or operate within the safety zone shall contact the Captain of the Port, Lake Michigan or an on-scene representative to obtain permission to do so. The Captain of the Port, Lake Michigan or an on-scene representative may be contacted via VHF Channel 16 or at (414) 747-7182.USCG-2017-1066, 83 FR 23224, May 18, 2018