javcs wrote:No, jump-drive-less ships aren't stations. They're system defense craft, or system defense monitors, or what have you, depending on which set of sci-fi terminology you're using.
An actual station is not only going to be larger than a ship, but it will be, relatively speaking, more or less immobile relative to an actual ship. It will certainly have thrusters in order to adjust its orbit and position, but most of the time, it's going to stay in more or less the same place, and its manoeuvres aren't going to be particularly fancy.
You don't depend on stations for defending your system or your planets or what have you. You need actual ships for that, but you're still going to have actual stations around your planets, for all the things that a station can do and a ship cannot (or at least, cannot do as well).
a 'Station' as you imagine it is exactly what you say it is: a very easy and vulnerable target.
A single mass-driver round that hits and that thing you spent billions of man-hours building is suddenly falling out of orbit...
In modern warfare on earth today: such a large and immobile station would be equivalent to a modern oil derrick. An unbelievably vulnerable target that has no purpose ever existing in a warzone.
Such stations would only exist in home systems, not systems where actual combat is taking place: not to mention that any weaponry mounted on a station would require to be within the same range as a star-ship to hit a Umiak star-ship in combat, but the Umiak could knock it out at a ridiculously longer range.
IF you build your station to be a more of a mobile starbase, with drives and construction able to manoeuvre like a starship, then it can be a tactical asset in combat, rather than something you have to defend.
The fact that you don't have to set aside engine energy capacity, nor space aboard such a starbase to allow FTL, you can fit bigger and perhaps better engines, and actually increase the star-bases manoeuvrability, making it go from 'tactical asset' to 'tactical ADVANTAGE', an object that the Umiak have to get even closer and spend even longer inside the Loroi effective range in order to have a reasonable chance to hit with their preferred weaponry.
In short:
In all forms of known modern warfare, if all you can do is sit still while everyone else manoeuvres around you, you are dead meat.
Lets not forget, the armour of the starships in outsider are already far outgunned by actual weapons in it (if your ship gets hit by a ship to ship weapon, either you are barely scratched(glancing blow or deflected by screens), or random scrap), and it is thanks to things such as their screen technology and engine technology that combat is survivable in the first place, with a couple exceptions regarding the heaviest of battleships and other blockade breakers (which Arioch hasn't explained how exactly their armour handles repeated hits, it might just be they use layered screens to reduce the damage inflicted enough to make their armour valuable).
I struggle to understand how any actual value can be derived from having a station in stable orbit, when the first time an actual attack comes it becomes almost instant scrap metal