User blog comment:Capt Shruikan/NEW Rank IV Hull Upgrade: StormChaser!/@comment-2084412-20111124000627/@comment-4417209-20111124025535

well thats not exactly true, see you can upgrade any upgrade 3 times then when you get to the specical, you upgrade either up or down from up to down order, ( ie, copperhead, upgrade to what ever is below it and so on.) steamline is just a faster way