An unusual mission is underway on Lake Erie, off the Erie County shoreline.
If you were near the lake on Tuesday, there’s a good chance you saw that mission underway.
A ship named “The Thomas Jefferson” is using sonar to map the lake bed for the first time in decades.
The 208-foot ship is operated by the National Oceanic and Atmospheric Administration (NOAA).
The information they collect will be used to update nautical charts used by ships on Lake Erie.