Hey, I still hold to my premise even though it is being dumped on so heavily in this thread. I do believe my hypothesis has merit to debate at least because that is all it is...just a theory. If I fold my position then how do we have any debate?
Stand your ground. Any Axis naval 'what if' on the internet gets heavily attacked for simply existing.
IMO, you need to tie the idea of a larger pre-war U-boat arm and U-boat production to a more coherent grand strategy, while at the same time, dropping the idea of a quick U-boat victory. Turbocharge this mo'fo.
Some thoughts on that grand strategy. You might like some, not like others, but all are intended to 'push' in the direction of your thread. -
1. Increased U-boat production as per your proposal.
2. Alliance with Soviet Union, no Barbarossa, no war in the East. Germany wants to trade political concessions (ie, Soviet territorial expansion against 3rd parties) and technology to Russia in exchange for oil, wheat, and naval war materials. (The Soviets were not good with submarine technology at this time, but they had massive industry that should be able to crank out vast numbers of increasingly sophisticated sea mines that the Axis could use in their commerce war. They can build large numbers of the relatively unsophisticated landing craft and small escorts needed for Sealion, their aviation industry could build small or moderate numbers of crude but useful long range 4-engine bombers that the Germans lacked. Their neutral shipping in the Atlantic and Pacific could provide an added intelligence network for the Axis. )
3. The Luftwaffe night time strategic bombing targets in 1940-1941 are the West coast UK seaports. Reduce capacity in order to undermine convoy tactics, (which required immense logistical support in the UK in order to unload so many convoyed ships at once).
4. Sealion 1941 has to be cocked and ready to go. Not because you intend to invade, but because with (2) above you can afford to deploy the threat of Sealion. All the posters talking about extra UK convoy escorts? Sealion pins about 100 of these permanently to anti-invasion alert duties from invasion season in May 1941 to October 1941. The bigger the threat of Sealion in 1941, the more UK destroyers and escorts are pinned to anti-invasion reaction forces.
5. Spain. Will enter the war, one way or another, such that the union of the Axis fleets can be made at the Iberian peninsula. During WW2 the Italians deployed about 30 submarines to the Atlantic, operating out of French bases. This campaign constituted the most successful non-German submarine offensive in WW2, as the Italians sank a million tons of shipping. So, take Spain such that the Italians can operate a much larger submarine fleet in the Atlantic.
6. France,
Check out the organization of the French Navy - France had a magnificent submarine force that the Axis just basically ignored historically. Alter your armistice terms with France in June 1940 that they keep their surface fleet, but must surrender all their submarines to Germany, along with the specialists in their crews. In compensation, let them keep Paris as their seat of government and let them keep their surface fleet in French hands and a state of full operational readiness. The idea is to have the KM take over the entire French submarine force as part of the armistice provisions, and then work them up with German crews for operations by 1941, using the French specialists to accelerate the process.
7. Japan. If the Japanese and US go to war, then war between Germany and the US is inevitable. For your scenario, therefore, you do not want the Japanese in the war. So Axis diplomacy should emphasize Japanese isolation in order to keep the US neutral. But, if war does come, then what the Axis want is for Japan to dispatch its long range submarine force to the Atlantic to join this campaign. Obviously, this gets easier if the Axis control the Suez Canal.
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