Originally Posted by moseriw
funny.. no comments on last post?
well, I'll bite.
As to cm93, it uses several scales
. It's not unusual for any small scale charts
to have an iffy accuracy . Remember what a similar-scale paper chart is like....If it covers an ocean, it's not going to pinpoint lighthouses or anything else. ( eg: Mercator flat plane distorts a sphere)
But I'd expect the largest scale (seen as you zoom in) should be the most accurate.
Add to the above: as I said, cm93 got its data per the lighthouses shorelines and rocks... somewhere.
Overall, there was lots of data that got incorporated into digital maps and charts from various sources. hereabouts, I think a shoreline may have originally come from airplane stereo pix made in the 20's ....interesting story- but it's in transition- Satellites radar
and better sonar are taking it over.
...anyways, Locally, YOU are a better judge than I am.
So, choose: Lightlist? cm93? angles from mountain peaks to points of land taken from an old chart drawn by Captain