At the first indication of a diving illness, contact a ranger on marine radio (channel 16) at Rock Harbor or Windigo, or in person. Do not wait to confirm that there is a problem. Isle Royale National Park maintains procedures for the treatment and evacuation of accident victims. An National Park Service diving team can be activated for search and rescue operations. Help Us. Help us provide a safe, enjoyable visit for all divers. Report all scuba related accidents, near accidents, hazardous diving situations, or unusual observations to a park ranger as soon as possible. Your suggestions concerning the management of underwater cultural resources are encouraged.