And that is assuming you even only had 3 sections of your ship. If you simulated armor realistically it would be as if you were not simulating it at all. And to circumvent this issue, energy shields exist. They add a layer of strategy and some buffer for player error, and that is the whole reason they exist. Without energy shields, a single torpedo could kill you.
Yea, finding a realistic model that isn't "you get hit, you die" is trickier than it seems at first.
I like the model in the Honor Harrington novels: sure, that multi-ton missile's possibly coming in at over half the speed of light. If it were to make actual physical contact with your ship, you'd be toast even if your ship was literally just a ball of armor
, let alone anything trying to be a useful military starship. Frankly, a hardened planetary installation would have trouble with that. But realistically after hundreds of years of experience people have figured out how to make it basically impossible to actually get a contact-hit even if the missile still has drive time. As a result, the modern missiles don't even try for that, they just get close enough and use nuke-pumped lasing rods to translate the energy into beams of coherent light that can hit your ship. Those lasers are orders of magnitude less powerful than the actual kinetic-kill potential of the weapon, and are actually susceptible to sidewalls (artifical-gravity deflection, basically) and armor.
Sure, the whole artificial gravity physics in there is a total fabrication, but that's the "fi" part of the scifi
And generally it tries to be "realistic" from there on once the fictional premises are granted.