Kamome used to be default Kusari miner, but they made it for GMG, it turns out. Just because it can't mine any ore except Helium. It was definitely supposed to be GMG (even looking at the design), but for some reason it was named "Kusari Mining Ship", yah. So... Well, you can still use good old generic Hegemon (with Kusari engines, maybe) if you're about to mine any other things than Helium.