I'm looking for an option to import nautical maps (mostly for depth data) into QGIS. So far, I managed to import NOAA .KAP files, but coverage and resolution of some areas are not very good. Is there a chance to import data from Garmin or Navionics into QGIS (I know that this is an expensive option). Or does anyone know a free alternative?
I'm using QGIS 3.4.10 and am a beginner, complex operations to import data are not an option for me right now (except with very detailed instructions for QGIS 3.4.10).