BabaYaga
Well-known member
No experience with Navionics, but with regard to Swedish waters it is a fact that the official hydrographer Sjöfartsverket (from which Navionics and others get their data)
Hydrographic Information
has received a lot of criticism from boating circles in recent years for how their new charting methods blur out useful depth information in the 0 – 3 metres range. The general advice among fellow boaters has been: Don't renew your charts, the old editions are better.
Therefore the need for addition depth data, from pilot books/services and large scale charts from other sources than Sjöfartsverket has increased the last few years.
Hydrographic Information
has received a lot of criticism from boating circles in recent years for how their new charting methods blur out useful depth information in the 0 – 3 metres range. The general advice among fellow boaters has been: Don't renew your charts, the old editions are better.
Therefore the need for addition depth data, from pilot books/services and large scale charts from other sources than Sjöfartsverket has increased the last few years.