I don't know a whole lot about this design. In fact the only hard fact I have about it is the length.
However judging by the design its from around the same time as the Delfinen class submarine, so the late fifties or maybe early sixties.
It is also the first submarine I've ever drawn.
I'm currently trying to track down the project name. It's either a predecessor or a follow on to the aforementioned Delfinen class.
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“Close” only counts with horseshoes, hand grenades, and tactical nuclear weapons.
That which does not kill me has made a grave tactical error
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