Having come back to sailing/cruising after many years I was surprised at the level of navigational knowledge of the typical boater. In the old days, I had my charts, my hand-held compass, binoculars, dividers, etc. Now people go out with their smartphone and end up hitting the wrong side of a marker. Course, there seems to be less drinking and boating these days so that's a plus.
For those interested there are a lot of free options for charts. One is OpenCPN [0] which provides an interface to charting and all your electronics (e.g. AIS, GPS, radar). There are free raster & vector charts available worldwide (e.g. NOAA) which can be downloaded onto your PC or Raspberry PI.