where can i hunt battleship cannon 30?

as title. just curious as i bombed 3 of it Q___Q
ps: i found the guides of plenty and it said red wyvern and lyka, but hidden street stated otherwise. which one is correct?

 

Hidden street doesn't always have the same drops as us as it is for a similar version, but we are not the same. If you need help looking up drops, use our library. www.royals.ms/library

Hope you find what you need ^^

 

Is it just me the library doesn't work for?

 

The library works. When you search something, do not press the link given as recommendation. Simply type what you need and press enter.
For instance here, copy and paste '[Mastery Book] Battleship Cannon', then press enter.

Result: Battleship Cannon 30 = "Drops from: Red Wyvern, Raika."

 

thanks