Seconding this, and I'd add that Sobel's Galileo's Daughter was also a good read for anyone interested in the history of science.
Not to discount Harrison’s achievements, but there are other interesting navigational approaches - using Tobias Mayer’s Lunar tables:
> Mayer is far less celebrated than Harrison, but his method was in many ways the more immediately successful of the two
Or, if society were to collapse and rebuild, Lewis Dartnell proposes a radio in “The Knowledge”, since a radio transmitter is probably simpler to build than an accurate chronometer.