[IronDuke99]

The Germans could not have invaded Britain in 1940. The Royal Navy was simply far too large and too powerful for the Germans to have had any chance of success, even more so after the heavy German naval losses off Norway, etc.

Even if the Germans had managed, somehow, to get most of a first wave safely ashore, they could not have been kept supplied.

The RAF, even if losing to the German Air Force could always have pulled aircraft back beyond range of German Fighter escorts. UK was in 1940, hugely out producing Germany in terms of fighter aircraft.

This subject has been done to death in other places but Sealion never stood any chance of success whatever. None.