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I was a submariner for 6 years. The only thing this would be good for is an underwater coffin.
No ballast or trim tanks, only half the necessary control surfaces, an oddly placed control room no where near large enough for sonar, radio, & hydraulic controls, no definitive pressure hull, just superstructure.
Hopefully you do these just as doodles and don't serious consider yourself a "designer". I don't want to crush your dreams but they look like a 12 year old drew them.




Ones like this are half a century old, significantly more complicated, and still turned out to be coffins for several thousand sailors.

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The QS-01 is just a mere transport mini-sub. It doesnt need all that complex gadgetry.

This is the Panzer Submarine right here: