Board Thread:Fleet's Prepared-ness/@comment-32198889-20170704110345/@comment-11700680-20170704145926

Mainly ships that have a Kai Ni, though there are a few that aren't worth it. Try to get 4-3 unlocked at some point if you don't have it unlocked already, it is the best place to rapidly level destroyers and light cruisers, and since there are so many destroyers to level it is a good place to level the supporting ships through sheer usage. 3-2 is a good map for leveling the other larger ships.

As for specific ships to level:

Abukuma (PRIORITY) if you have a blueprint, Shouhou because fast CVL are a must, Kuma because she is quite strong even without a Kai Ni, Maya because of her very powerful AACI, the Myoukou class heavy cruisers because of their power, the Kongou class, any destroyer with a Kai Ni, and at least one more CAV of your choice.

Last event we needed at least 11 decently leveled destroyers if we wanted to do all normal or hard, so don't neglect them even if they are weaker then other ships.

Some links to guides that I use:

http://kancolle.wikia.com/wiki/Thread:290345

http://kancolle.wikia.com/wiki/User_blog:Shinhwalee/World_4-3_Power_Level_Guide_for_DD_%26_CL

http://kancolle.wikia.com/wiki/User_blog:Shinhwalee/Guide_to_Power_Leveling_Heavy_Cruiser_%28CA%29_in_World_3-2A