3 ms·
Not just old marine maps -- modern marine charts have the same. They mark radio towers, grain silos, etc. because although GPS is widely-used, the old navigatio
by floren 4y ago
Not just old marine maps -- modern marine charts have the same. They mark radio towers, grain silos, etc. because although GPS is widely-used, the old navigation techniques are still important.
- Turing_Machine 4y agoI believe the U.S. Naval Academy actually stopped teaching old school celestial navigation for a while, then someone with a bit of common sense realized that there were scenarios (particularly in a war situation) where the GPS constellation might not be available, and started teaching it again. You can't just pull over at a gas station in the middle of the Pacific Ocean and ask for directions. :-)