The call for help was received at 7:50pm. A Coast Guard airboat from Essexville and a rescue helicopter from Air Station Detroit responded, along with crews from Tuscola County fire and police departments and a rescue airboat from Huron County.
The rescued person was found clinging to the hull of the capsized airboat. The second person was last seen trying to swim to the nearest ice floe.
The search is expected to continue on Sunday.