Join Date: Dec 2008
Location: North Carolina
Thanked 13 Times in 9 Posts
Rep Power: 7
Chart Plotter Accuracy - Be Careful
My neighbor just came back from a cruise in NC waters that took him up the Alligator River. He told me that he met the crew of a Catalina 42 that was using a chartplotter to navigate and ran aground in the river because the electronic chart failed to show a shoal that was clearly shown on the paper charts. After losing several hours trying to kedge off, wherein the captain badly hurt his hand on the anchor chain, the boat was towed off the shoal at the cost of $1,800. My neighbor, who also has a electronic chart plotter, confirmed that the shoal was not shown on his electronic charts either (don't know if the two plotters were the same make, nor which makes). He confirmed that the paper charts showed the shoal clearly. Just a note of caution, the computer is not always correct.
Last edited by NCC320; 06-14-2010 at 11:14 AM.