No, as said, the doors needed work, but "THAT's the way to draw the door" suggests that is the only allowed way.
As for the skeg, while your alternatives no longer have 2 double black pixels, both of them suggest a skeg of a different angle then the one drawn. Accuracy sometimes trumps a few black pixels in my book.
I did not look at the reference, so I ignored comments on that: I purely commented on how making the shape of said opbjects would alter their shape from what they are now (I have not checked with refs so I have no opinion on if they are accurate now) but just saying that it is not impossible to draw these as such. Especially the mast top which you suggested to use greys to avoid black blobs, has no issues at all in my book.
@Albert, looking forward to the updated version of this drawing and any future drawings, they show promise