Hello,
well, planes do not spot me in '39-'40 when i am submerged, as it should be - did not try out the later years though.
As far as i have read the only device for a surface detection that was possible in 1945 was the centimeter radar, this being able to even spot the emerging tips of periscopes or snorkels, if only in calm seas. But a magnetic detector ?
"MAD" Magnetic Anomaly Detection in 1945 ? I know the magnetic changes in the sea-floor were detected accidentally by searching for russian subs in the 1960ies with those devices (thus giving an evidence for sea floor spreading, and plate tectonics -> Wegener's theory), but in 1945 ??! I doubt this, but will have a look for it and post here again.
Greetings,
Catfish
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