Ship c, the full name of fleet assembly, also known as KANCOLLE, is a Japanese page tour. You can only log in with Japanese IP, and other places can log in with VPN. Officially, it is not recommended to log in with devices other than the initial PC.
Ship N is a domestic mobile game named Battleship Girl, which was developed by Mo Meng (hereinafter referred to as HM) and operated by Paiqu (hereinafter referred to as P7).
But last July, something happened between P7 and HM, which caused them not to work together.
Then P7 is still running the ship N, but it is already illegally running private servers, and there have been incidents of stealing traffic (stealing a few grams). Besides, dubbing is basically done by two people, which does not fully reflect the characteristics of each carrier. The operability is very poor, it will not be updated basically, and it may be closed at any time.
HM did it separately from P7 for a period of time, but still used the name "warship girl", that is, "N ship". Later, in order to distinguish it from P7, it was changed to warship girl R. If you want to join warship girl, I recommend this one. The update and activity are relatively stable.