The US Coast Guard will use scanning sonar and a Commanche ROV used to assess damage to subsea utility cables in the Straits of Mackinac, between Lake Michigan and Lake Huron. Full story available at: USCG 15apr18
UPDATE 24apr18 – Electrical cable wires were completely severed by a ship’s anchor. Full story at: MiNews26 – Underwater imagery Reveals Cables… 24apr18