Martin, a doubt has upsurged in my mind now that I read your post.

The Regensburg raid had a very deep impact on the Me-262 project, as well as the Peenemünde raid on the V-2 one.

I remember having read in C. D. Bekker's Kampf und Untergaang der Kriegsmarine (I can't remember the title in English) that the type-XXI submarines' project was delayed almost a year for several reasons. By spring 1945 there were more than 100 type-XXI U-boats built and serviceable, but with crews still training.

Do you think that the Allied air offensive —even a particular raid— had a comparable effect on this project as did with the Me-262 and the V-2?

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"War is less costly than servitude, the choice is always between Verdun and Dachau." - Jean Dutourd, French veteran of both world wars

"A mon fils: depuis que tes yeux sont fermes les miens n’ont cessé de pleurir." - Mère française, Verdun