It was not all that long ago when everyone used DR. The use of RDF and LORAN are fairly recent although they seem like ancient stuff now. I used to enjoy the challenge of navigating in poor visibility across the gyre in Block Island Sound, trying to avoid the Sow and Pigs
It's probably only in the last 30 years that sailors have slacked off in their use of DR with the incredible marvel of
GPS integrated into plotting gadgets.