![](https://v2.anonup.com/upload/avatars/2021/01/bEhGOf4Dpn4dY8S32TIn_10_a937502bec454146b3d89c50e7bbe257_thumbnail_512x512.jpg)
Back in the late 90s, the US Naval Academy stopped teaching old school navigation (incl. dead reckoning, using a sextant, celestial nav, etc.). That caused a lot of probs esp during Afghanistan/Iraq when electrical systems were targeted or just failed. They're back to teaching the reliable "old school" methods. 😎