I recently added the MKS/OKS mod, and have been playing with it my Sandbox game (the mod has a steep learning curve, and many of the components are quite expensive, so testing it out in my Career game seemed unwise). My OKS space station's first two modules: a docking module and habitat module (consisting of a Kerbitat and an inflatable Habitation Ring) have been docked in LKO (about 125 km up). Here is the construction team -- Milfurt, Barbald, and Roley Kerman -- arriving at the station aboard a rather prosaically-named Three-Man Utility Spacecraft. Note the 6S Service Component Tube just aft of the large decoupler, which conceals the its batteries, monopropellant tanks, and a bare-minimum set of TAC Life Support HexCans. The Three-Man Utility Spacecraft is intended to be cheap, and has just barely enough Delta-v to get up to the space station and de-orbit again safely. Here is a view of the whole space station, thus far: Note that the space station has two sets of docking ports. The set closer to the habitation module is intended for visiting spacecraft. Once the station is complete, the other set of ports (closer to the antenna cluster) will be used for large unmanned tankers. The space station's OKS components are being launched unfinished, as mere empty shells. The Basic Machinery that will make everything functional will be brought up later, aboard unmanned cargo ships -- installing it will be Milfurt, Barbald, and Roley's job. Unfortunately, the station won't provide any life support until that job is finished, so in the meantime the construction crew will be living in this "construction shack" temporary shelter. Life support consumables are provided by an unmanned self-propelled life support module, launched separately and docked to side of the construction shack. One wonders how the food gets out of those TAC HexCans, through that small docking port, and into the Hitchhiker Storage Container. I tend to imagine it delivered through pipes in paste or slurry form, and dispensed through spigots into collapsible plastic squeeze-tubes (very appetizing, yes). If that is, indeed, their staple diet, then it's not surprising Kerbals are so fond of snacks -- one imagines them jamming as many cellophane-wrapped goodies as possible into the pockets of their flight suits right before take-off. That will also give them an incentive to get station's Aeroponics Module and inflatable Agriculture Modules operational on schedule!
