I'll agree with you there Kai.

In theory it might work if you were launching from somehwere that was always calm, but in any kind of seas, you could never launch it. Apart from the fact that it would probably swamp and sink when you opened the firing doors, you could never garantee where the rocket would end up as even the slightest swell would alter the trajectory quite a bit.

And I can't imagine the U-Boat crew being too happy about dragging this large container through the water all the way across to America, then having to sit in one place while the container was floated upright and the rocket fired. I'd be tempted to radio back that the rocket had been "accidently" lost during heavy weather .

Mind you, using the Werfgerat rockets was a brilliant idea with a lot of potential, and if they'd had the idea earlier, it probably wouldn't have taken them that long to figure out how to place the rockets inside the sub, so that the launchers could be reloaded.

Imagine a wolf pack armed with rockets slipping into close range of an Allied harbour filled with ships, or even just close into shore near an oil refinery or even as a way of taking the war to the US people. Imagine what the impact would be if German rockets started landing in New York or another major city on the US coast.

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"We have invaded space with our rocket and for the first time - mark this well - have used space as a bridge between two points on the earth; we have proved rocket propulsion practicable for space travel. This third day of October, 1942, is the first of a new era of transportation, that of space travel." - General Walter Dornberger