That is correct.So I am right in saying that you need to get the required credits for the next rank in 1 week, by either having enough made in that week or the total of the carried over plus this weeks merits?
When you say "claim" I suspect you are referring to the vouchers you get for pewpewing enemy ships. They need to be claimed in the week as they will just expire at the end of the week; don't hoard them! Until you cash them in you don't have any merits.What happens if I do not claim the previous weeks and the weeks before, I appreciate they they decay in value, do they then total up to what I need for the next rank?