Well, maybe im not the exact guy to write a critique, but by seen your work and you are requesting it,here it goes...
Execution is super well done, at first i saw kind of spaceship with a solar sail or something... proportions and sense of scale are there,coloring, depth highlites/shadows are there...great attention to detail... By looking at the design for a few minutes and for more that i try to pícture it inside the water, i dont see that could actualy work, i believe the big plate on the front would create a lot of resistance to the water,making the sub slow, unless is maybe a Lab Sub or something like that,
Now,judging by your work i believe you like fast moving veichles i think without that plate in the front it could work much better for a submarine and make a more agresive and functional design... Just me. Keep up The fantastic Work. Elemento
Would it be possible to collaborate the two designs...use this as a base and in-corporate the middle central fin along the top of the sub, then the spinning blades would not fit/work sadly but this I think would really bring the design together nicely
It's difficult to explain it briefly, but I have made some modifications to make the project more realistic. For sure, this project is a bit science fiction, but the blue version (older version) definitively doesn't works in my screenplay (the propeller that serves at the same time as a sailing). So you can notice that the main body is approximately the same. The changes are fisrt of all the sail (here a simple sail which as only one function), this two pillars in order that the submarine could alight on the ocean's bottom and the propeller in order to recover the energy of the ocean current.
So after some personal reflections and thanks to the comments and the poll, I will use this one as a base, keep all the technical parts and change the design (style). In order to make it more pure, more smoothly and with a "streamline" character (more like the first version).
Yeah, now you mention about the propeller to recover energy I really like this idea, its gives functionality to the design. Maybe if the fin running along the top of the sub could have a break in it for the propeller to spin freely?
Regardless, I'm still a huge fan of your work, keep them coming!