[Hottentot]

It has been ages since I played it last time, but if I recall correctly, the navigation is rather easy. The navigator does most of the work, but you will have to periodically help him. Don't let him get lost: then it's already too late. Instead hop into the navigation station in short intervals and check the map.

From the top of my head I think the map should show your flight route and a little 3D bomber on it. The icon is where the navigator thinks you are. You should check if he is correct. After crossing the Channel he should still have a pretty decent idea. Compare the coastline to the map's coast and drag the bomber icon on the right place on the map. Keep doing this periodically by using landmarks such as roads, rivers and cities. If you do it often enough, the icon won't deviate from the course too much and the corrections needed are small.

In due time the navigator should improve and start calling out places on his own, saying along the lines "I think that's Caen below us". He still needs your help, but that's a good sign of being on the right track.