Consequences of a Failed SEALION

Could Hitler have somehow dragged Mussolini into it by pushing for a capture of Gibraltar so part of the Italian fleet could take part? Really, we should challenge ourselves on screwing the Axis harder right now.
All it takes to screw the Axis is to have the RAF spot the assembled U-boats on that first morning and take a golden opportunity to send them to the bottom.
 
Therefore the RN is going to be weaker in the Mediterranean and North Atlantic. So there might have been no German paratroops to take Crete, but the planned amphibious landing got through because there were no British cruisers and destroyers available to sink the convoy, which is what happened IOTL.

But the Kriegsmarine's surface fleet is going to be just as strong in the aftermath of a failed Sealion because all but one of the big ships (i.e. the Hipper) would not have taken part in the disaster because they were either still under construction or under repair.
RN losses are somewhat counteracted by the losses of Kriegsmarine personnel in the escorts and landing vessels... there's suddenly vastly fewer experienced officers and sailors with a technical background to man new build U-Boats and surface ships...
 
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