Originally Posted by Westerly31
I prefer Canadian raster charts, at least I used them for all the Great Lakes and they are miraculously great even though some of them are based on early 1900 cartography.
I have both CHS Raster charts AND O-charts vector charts. Both fully up-to-date. Both work
very well in OpenCPN
Yes, I too PREFER CHS raster charts.
Here in British Columbia
, bathymetry is mostly based on much more recent soundings (many within past 10 years).
However, O-Chart vector have some other positives, as well as being much less expensive than CHS raster. I like them too.
An oddity with o-charts Vector based on CHS vector: CHS apparently did not include "all" of the old fathom-based charts of BC (there some missing from Haida Gwaii, even though they ARE included in CHS raster packages).
CM93 is really not appropriate option for Canada