This page simulates the gacha part of the game Azur Lane (Yostar) where you 'build' ships with the apparence of anime girls. Shinano y New Jersey ships can be get in the Special banner (in the game doesn't appear there).
What is this? A gacha game is like a lottery, is based on the toy vending machines where you introduce a coin then turn a lever and the machine pop out a capsule. These ships have rarity which determines the chance to get'em. The math behind this app doesn't work like the game (still working on it) and the pools can contain ships that doesn't really appears in them. So use this app just for fun.