“I don’t understand what wearing a chronometer does for a person...”
I am way over my head here, but I once read some piece by William Buckley wherein he discussed watches that are “good enough” (my words) to be considered chronometers (at least I think this was the gist of it) because you could use them to navigate at sea (something like that).
So, if one already HAS a yacht....it’s pretty much a bare necessity!
But, cell phones have GPS, barometer, compass and a bunch of other things built in, plus the internet if in range of data provides (which signals often duct over water, enabling signal reception far from land).