I think it would be very difficult to make a judgement on Navionics base charts being better than C maps base charts. I have chart plotters which use both. (Not Raymarine) The detail given in the "C map" base chart, is far less than what is on the basic plotters. I suspect that this is due to the fact that RayMarine stopped using C map some time ago, and what is seen here may reflect relitatively old material. Or...could it be that RayMarine is intentionally using a map with much less resolution? I have used C maps (and Navionics) for the last 5 years--since discontinuing Garmin--and found that in some places one was better than the other--both in base charts and the detailed charts.
From what you show as the C map, it might be dangerous to use that as route planning material....or I am missing some major point here.
From what you show as the C map, it might be dangerous to use that as route planning material....or I am missing some major point here.