Nav Aids
Exnomad
Does anyone else remember Consol - the German submarine fixing aid for the N.Atlantic ? It relied on rotating signals from three transmitters, in Norway, N. Ireland and Brittany by the time we were using it, the Germans of course used Spain in lieu of N.Ireland ( I don't know what that says about Spanish neutrality),
The signals were pushed out on MF and the fix obtained from where they overlapped. The bearing was obtained by listening to each signal and noting the equi signal.
It was dead simple and a lot of sailors used it plotting via the bizarre Consol chart in later years. Not sure about its accuracy
I'm meandering, enough