How to make edges of adjacent objects be visible? On the picture below I have planes inside of the other plane, but borders of all these planes disappear visually in Look Dev mode. But I need separate planes to be distinct.
I'm not talking about Blender view settings, but about shaders, materials...
I need borders of planes be darker. Like they were in Solid mode.
Your question is very imprecise, but if you want to see the grooves on the hull you could do it this way:


Join all your objects into one, merge the vertices by distance.
Select the edges that are supposed to become grooves.
Bevel them.
Give some correction in order to have nice grooves (my version needs to be re-worked in order to have a proper topology because it will mess up once you'll give it a Subdivision Surface modifier.
Extrude.