Automatic navigation in the WW2 sense would mean an automatic plotting system.
Instead of some quartermaster of the watch actually drawing the course lines on the map, an "automatic pencil" does that, which still needs manual input regarding course and speed.
The system would have absolutely no way to compensate for anything but would be totally dependent on outside data, which in WW2 meant celestial or terrestric navigation.
It just replaces the pencil.
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