Single ping from the ATLAS forward-looking sonar shows the 200-degree sector with distinct small discrete objects, bottom features, a T-shaped pier, and the shoreline.
 Single Ping
Image courtesy of Thunder Bay 2010 Expedition, NOAA-OER. Download image (jpg, 42 KB).

Single ping from the ATLAS forward-looking sonar shows the 200-degree sector with distinct small discrete objects, bottom features, a T-shaped pier, and the shoreline.

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