NavList:

While reading some older messages I came across one that said the USN was concerned that Navlist members have more cellnav knowledge than crews of billion dollar warships. Whether this is true or not it raises an interesting question.......

Selective availability was turned off in 2000.

Mariners were probably using GPS before 2000.

Some civilian ships used Transit (as far as I know).

INS for aircraft came into use in the 1970s and navigators were retired/retrained.

Crews of merchant ships are (or have been) reduced.

Therefore what percentage of active mariners (i.e. not retired) were trained in cellnav?  What percentage have used cellnav for "real" rather than as a toy because they were bored with GPS?

If the same questions are asked of aviators I suspect that the percentage is almost zero - maybe just a few ex-military pilots?

I find it strange that my THEORETICAL knowledge of cellnav is probably greater than most of today's mariners and aviators. (I emphasised theoretical because my practical experience is an artificial horizon in my backyard).

A subsidiary question -  do 21st century marinesr understand/use position lines or is now all waypoint to waypoint?