das
Regeneration In Process
Why, isn't that precisely what I have implied in the last sentence?
I suppose I'm in agreement, then. 
I suppose I'm in agreement, then. 
I suppose I'm in agreement, then. 
Decloak: das remains correct. Real-time magnetic anomaly detection, surface-penetrating radar... The more advanced something gets, the more ways there are to find it as a consequence of those same advances. Find something, drop a bar of metal of metal on it. Or a rock. Problem solved.the Exception to that would be Submarines. with a large about of water to hide beneath, they would be hard to find from space.
Decloak: I'm looking at it more from an offensive angle. Ships are a lot harder to transport. Yes, the Imperium and its various foes have ships several kilometers long--transporting an aircraft carrier or its ilk is still not going to be easy and neither is landing it on a planetary surface or (much more particularly) getting it off that planet when you're done there. This remains an extreme logistical difficulty even for a civilization with that kind of capability.The bigger an object is, the more likely it has to be constructed on the surface if it's to be used at all--and thus the more unlikely it is to be used except in particularly dire or extended circumstances.In the case where space forces are absent or space superiority is contested sea navies fill the vital roles they always have. Even at the bottom of the gravity well under hostile space they are hardly worse off than ground based emplacements.