Longitude

Another nautical note is that some amount of effort went into solving the longitude problem, also known as the "lowering the odds of running aground by better knowing where the heck you are" problem, among other benefits. There's a book about this, "Longitude" by Dava Sobel or one can probably find videos, somewhere. As is distressingly common with humans, there were Various Vested Interests who had invested in a lunar method that was maybe not quite so as good as using an accurate enough clock and naturally those Vested Interests worked to prevent the prize money from going to the clock innovator among other such efforts to make clocks look bad.

Even if you do know (roughly) where you are, you probably still need a map or charts to show what was known to be there, so clocks are necessary but not sufficient.

Future risks probably include becoming too reliant on GPS and similar networks, so it might be good to keep folks trained up on the various older methods, but that, alas, does cost money and time.