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The river barges in particular would have benn dodgy as hell in the channel
A good point which I have made several times on similar threads. Anyone unfamiliar with the sea who thinks crossing the Channel is easy because its only 20 miles or so across doesnt have a clue just how fearsome the currents and weather can be. A flat bottomed river barge with a max speed of 6 knots in the Channel is basically a way of killing lots of your own soldiers.
The trouble is, its not a twenty mile trip, its more like an 80mile journey, because the points of embarkatrion are widely scattered. It would take several days to tactically load the 100000 or so troops in the assault waves, and sea speed would not be 6 knots....thats the speed these craft could do on a calm flat body of water. With currents and swell, its probably more like 2-3 knots. That means it takes about a week for some troops to get emabraked, make tsailed from he journey and disembark.....no latrines, no means for hot food hounded by all that the RAF and the RN could throw at them, no real way to disembark. Its a recipe for disaster IMO
I read that Churchill forbade any capital ships from entering the Channel to counter any invasion unless the Germans had already deployed capital ships of their own. He thought it was just too risky otherwise.
The fact is once unleashed the Germans would have landed enough troops, supplies, artillery tanks, etc to smash the British defenses and drive on London, probably taking the capital after a bloody fight. The combined physical and psychological shock of such an attack could have been enough to topple the government and neutralize the UK in the short term, even if the RN was able to cut off any invasion from its line of supply after the fact. Its possible in such a crises Churchill would have been kicked out of power and some kind of deal struck with the nazi to shut down the second front to allow Hitler to get on with his massacre of the Slavs. In spite of the fact most posters would recoil at the above suggestions, the real life situation at that time was far too precarious to predict and could easily have gone either way..
But any invasion would have been very costly to both sides and no one could guarantee Hitler it would result in certain victory. Hitler was not going to risk his string of victories on anything short of a guaranteed victory… which is where Goering stepped in.
In 1940 can you just picture the swarms of Ansons amd Straeners swoopimg in for the kill , the RAF was willing to sustain 50% losses on ferrying Hudsons over the ocean because they lacked a useful maritime aircraft. Fortunately the losses in Ferry Command were much much lowerAnother chestnut is the claim that the RAF lacked the strike capability to do much harm to the Germans assets at sea. Just as an indication, Coastal Command in early 1941, in the Coastal waters of Europe sank well over 50000 tons of Axis shipping, just on the Atlantic seaboard. by July of 1941, they were completely dominating the coastal water around Britain. These barges were going to be travelling at less than 1 knot, and with 2000 of them it would be like sinking fish in a barrel. A combination of mines, bombs even torpedoes would have decimated the germans.....provided the grermans didnt have air superiority.
All it would take is one or two RN destroyers getting loose within the swarm of barges and the invasion fleet is history.
This old chestnut keeps bobbing to the surface.
Germany didn't have any operational capital ships for Sealion, because of both Scharnhorst and Gneisenau were badly damaged during Norway operations and were on docks to near the end of 1940. IMHO capital ships were not needed, cruisers and smaller ships would have been enough against German invasion fleet at sea.