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The waterway in S. Carolina and Georgia is very winding with a lot of current. To ensure that tugboats pushing barges keep in the narrow channel, "ranges" are provided as a visual aid.
On our first ICW trip, we devoted a page to the explanation of "ranges". For those of us with a short attention span, here it is again.
Photo: Range markers indicating "left of centerline"
Photo: Range markers indicating "on centerline"
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