The Luftwaffe did its very best to achieve air superiority against Fighter Command in OTL, and failed miserably. Note that they were attacking all along the Channel coast, plus a diversionary attack in the North, while here they would be converging on one fully known location. Yet somehow they should manage to defeat Fighter Command in this ATL, whereas in OTl they were defeated. Note that by mid-August, the Germans could field about 910 Bf 109s, while the British single-engine fighters were just 630 (give or take a few, the dates and the data are not exactly the same but reasonably accurate). That's about 3:2 for the Germans. The idea of the Luftwaffe generals was that they would win air superiority gradually, with a campaign lasting many weeks. Instead, on July 6, fighters are 760 to 645. That's 5:4 for the Germans. And the German commander wants the Bf 109s to acquire air supremacy instantly. What could go wrong with that? Note the German level bombers can be used to some effectiveness against British bases on the mainland, or against ground targets on the Isle of Wight, or concentrations of British forces preparing for embarkation, or RAF airfields. Trying to use them against warships at sea taking evasive maneuvers at top speed is sending them to the slaughter for nothing. The operational Stukas, on July 6, were 280, and they were aircraft that could not survive in the presence of unchecked enemy fighters. --- As a final laughing point, the total force of the Luftwaffe in Europe on July 6, counting only combat aircraft (level bombers, dive bombers, twin-engined fighters and Bf 109s) was about 2,450 aircraft. Let's call it 2,500 (and let's note it had increased, by mid-August). OK, in order to achieve just one of those "hundreds of thousands" of anti-shipping sorties "every day", all of those aircraft (including the fighters that should strive to keep the enemy fighters away from the Stukas) would have to perform 40 sorties a day. If by "hundreds" - plural - we understand at least 3 hundreds of thousands, then each and every last Luftwaffe combat aircraft has to fly 120 anti-shipping missions per day. For the numerically challenged, that's one mission every 12 minutes in a 24-hour day. It also assumes the Germans can magically hunt down warships in darkness. Yes, it would be impressive (albeit not very useful as far as the sorties by fighters and level bombers are involved), if only it were possible.