I didn't wrote that it's the ONLY way to draw the door. Of course, I'm eager to see how You would draw these particular door of this particular dimensions in fundamentally different manner. And I believe (I just checked, in fact) that You're not drawing them with hinges 3-pixel long and parallel to the door contour (creating 3x2 black spot) and You're not drawing portholes in the doors as 2x2 black spots, aren't You?
See the difference?
If that's the source Albert has used:
https://www.the-blueprints.com/blueprin ... nesweeper/
then I would say that this piece of equipment forward of the pilothouse could be easily drawn without creating double black line - simply by drawing that searchlight (?) on 1-pixel-thick support.
Also, I think that this circular part of the guns might be bit too large (and whole appearance of the cannon be rather off - in fact the guns are "outside" of this circle, not inside) - which would also help avoid double black line aft of the superstructure.
Many of the black pixels on the mast equipment could be avoided, sometimes by using different color to depict them (very dark grey etc.) or by modifying their shape.
Here's the photo of the bow of one of Hungarian Nestins - of course it has differences from the one on the source, but there are also similarities (mast!) that make it hard for me to agree with You.
https://live.staticflickr.com/8317/7964 ... e82e_b.jpg