Cannonshop's challenge for system defense got us talking about small Space Stations that could refuel other system defense craft. I don't have MML, so I hand jammed the below, and I may have missed something. It comes in below 10,000,000 C-Bills, and usually runs around with the 6 ASF cubicles empty (basically, they're just used as gas station pumps). It has max armor, minimal armament, and carries a full MASH suite and Medical Team for SAR, along with 4 Exoskeletons for salvage operations. 77 personnel are usually embarked (50 crew (45 base plus 3 gunners and 2 RTOs), 5 Medical Team, 10 Small Craft Crew, 6 "ground crew" for the ASF cubicles, and 4 Exoskeleton pilots with 2 Techs). There are 6 "crew quarters" bunks for rescued ASF pilots, and 28 "bay quality" racks for other rescued personnel.
Lily Pad
Tonnage 3,000.0
Thrust 36.0 0.1 Station Keeping
Fuel 500.0 1773.049645 Burn Days
Pumps 10.0
SI 30.0 1
Controls 3.0
Base Crew Quarters 315.0 45 7
Heat Sinks 7.0 53 Free 60 Total
Armor 70.0 56 Standard Points 10 Nose/Aft, 9 other facings Capital
Small Lasers 6.0 12 0.5 1 Dual mount in all arcs
Large Lasers 30.0 6 5 1 each arc
Communications Equipment 2.0 2 1 2 additional crew
Small Craft Cubicles 400.0 2 200 5 crew each
ASF Cubicles 900.0 6 150 2 crew each
Gunners 21.0 3 7
RTOs 14.0 2 7
Exoskeleton Bay 8.0 1 8 6 crew (4 pilots, 2 Techs)
Bay Crew 196.0 28 7 Long Term Quarters
Doors 0.0 9 0 2 Small Craft, 6 ASF, 1 Cargo
MASH 3.5 1 3.5 1 Operating Theater
Medical Team 35.0 5 7 Long Term Quarters
Upgrade Officer cabins 30.0 10 3 Officer Quarters
Life Boats 105.0 15 7
Consumables 78.5 189.1566265 Crew Days
Cargo 200.0 Usually more food, always equipment for harvesting water from asteroids
Costs
Controls
Bridge 230,000
Computer 200,000
Life Support 555,000
Sensors 80,000
Fire Control Computer 100,000
Gunnery Control Systems 60,000
Structure 100,000
Drive Unit 1,500
Engine 36,000
Engine Control Unit 1,000
Attitude Thrusters 25,000
Fuel Tank 100,000
Armor 700,000
Heat Sinks 120,000
Crew Quarters 1,245,000
Officer Upgrades 150,000
Lifeboats 75,000
ASF Cubicles 120,000
Small Craft Cubicles 40,000
Exoskeleton Bays 120,000
Doors 9,000
Small Lasers 135,000
Large Lasers 600,000
MASH Core Unit 35,000
2 Tons Communications Equipment 20,000
Sub Total 4,857,500
Final Cost 9,715,000