So here it is, there are warp gates that only allow certain size ships mainly in lower level missions, these missions offer roids but the problem is getting a hauler in to move any ore one might choose to mine, many of these missions will not allow an industrial ship thru because mass, so with that;
Nord Hakata (destroyer size support vessel)
500 m3 cargo hold
2000 m3 fleet hanger
27,500 m3 ore
30,000 m3 capacity total.
40 m3 drone bay / 25 drone bandwidth
Can fit 1 command burst module, 5% drone damage and mining yield per level, 300% bonus to survey range, 100% bonus to tractor range, 20 km range for command burst module.