Hello!
There are still some known deficiencies with the decoding of
C-MAP charts. Apparently there are deviations from the standard in the charts themselves as well.
Please identify the name of the chart in question (from within opencpn) and the precise name of the
C-MAP dataset, make some screenshots with/without currents (with the
commercial programme in question) if at all possible, and then post the bug
here (this thread is monitored by the lead developer).