There are some at the stern.
Indeed, there are some pixels that want to be ruddders.
Man, you almost missed every detail a good drawing needs. As lance said, the this, the that, etc. etc. etc.
Just take a look at a picture of an existing sub. Then take a look at blueprints of the same type (you can google that...). Does that look in any way like your drawing? Hmm, yes. One can imagine the drawing shall be some kind of submarine. But no shipbucket drawing in any kind.
No one here wants to abuse you, surely not. But please learn. At least from what the others tell you. Thanks.