Crew aboard the Coast Guard cutter Mobile Bay, a 140-foot icebreaking tug, retrieve multiple sinkers and flooded buoys Aug. 24, 2015, at Gravely Shoal buoy 4 in Lake Michigan. Mobile Bay crews worked with Station and Aids-to-Navigation Team Two Rivers, Michigan and the Coast Guard dive locker east to locate and salvage sunken aids-to-navigation. (U.S. Coast Guard photo by Ensign Nathan Jones/Released).
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