I have been going at this for a while now, and able to have 4 of my ship/subs to travel and four slots for each. I can make more however, I do not know what to make and how many of them. I have one of each part at lv 1, 15, and I believe 45, etc. But I do not know if I should have multiples and of what. Can people tell me what they have for ships/sub pieces? Still looking for sectors and using mainly for rare mats when needed.