[Cindi]

As a PNT (GPS) professional who is also a Master Mariner/Master ASA instructor, my opinion is “yes.” Too much reliance and watching a screen vs using true skills on the water (or hiking on land or general way-finding). Electronic signals should augment, not dominate. Also too is a false sense of security because no matter what constellation provides those signals (GNSS, GPS, GLONASS…), not only are those signals open to spoofing (deliberate corruption), even the Sun burping disrupts the electronic signal-flow. The end result corrupts the receiver data. My advice is yes to study 105, but add in weather and radar, then apply a mixed skillset to navigation which is augmented by electronic signal reception.