I think that I am somewhat biased by my own "demi-vintage" taste, and my tendency of classification ("old endodontic box minded"
Group I: "Pre-Albacore hull" submarines
: Is one of the most solid drawings here! A very credible design!
Leonardo da Vinci
: Well done drawings, both of them plenty of room for big machinery. The italian submarine with a hull form that is reminiscent of the german Type XXI.
: Another submarine that remembers the inheritance of Type XXI. Also a well done and believable drawing.
: Well done and detailed drawing, but it looks so small! I know that some research submarinas are nuclear powered, but I don´t know if a military reactor was feasible in that era for such small hull.
: Another of the leading desings! A believable design and very well drawn!
Group II: "Albacore hull" submarines
. That is my own drawing! Lacks of detail and the "master touch" of our leading fellow artists here. But at least shows my preferences in hull form!
: A nice drawing! Specially the second one (Type 09A). Plausible and well drawn.
: With sail, this would be the winner (for me) of the challenge! But as a sail-less design is rather "strange". Well detailed, with fabulous details as the contrarotating screws; but with odd additions as the chariot style bridge... A sail, my kingdom for a sail!!!
A good looking hull form, but with the racked sail looks as strange as the Churchill class. Unfortunatelly is a rather plain drawing, with little detail.
A nice hull form with a soviet like sail. Well detailed, but rather little for the machinery of the era. With a mid body torpedo set that "steals" some space in the machinery rooms.
: One of the most solid candidates for winning the challenge (well, there are others, but this candidate had the hull form and sail that pleased my own taste)!
Group III: "Post-Albacore hull" submarines
: Good drawing, and the 4 views is an additional effort. Well detailed and credible.
A modern hull form but with (at least!) a neat bow instead the angular prows of more modern designs. Nicelly detailed, and very well drawn and shadowed. A firm candidate for being the winner.
: Also a cute drawing. And also completely believable. But as the in the Spectre ssk, the angular bow is plausible but (at least for me) unpleasent.
Group IV: "Russian like" submarines
: Well drawn and detailed, but is so broad beamed!
: A nice drawing, very russian, but completely credible, well detailed and very well drawn. A solid candidate!
Vortex: Another russian like ssn!, and also well done. But the free holes are to "soviet" and noisy.
: A November like submarine, but is the less detailed of the series.
And the Oscar goes to...
Cheers, and thanks for all the drawings.