Talk:Reinforcement Expansion/@comment-26821064-20170713030809/@comment-30501447-20180423134606

Maya K2 and the duckies takes priorities (though if you have more than 2 duckies I think you only need to holepunch 1-2 of them.)

Then you have ships with special ability with expansion slot: 8cm gun on expansion slot for Suzuya K2, Kumano K2 (CAV form), Yura K2, Ooyodo, the Agano CL class (IMO the Aganos don't really need the expansion slot because the best they can do is use 1 main gun + 8cm gun on expansion slot + sonar + depth charge combo and you have DA at night + OASW at around lv 99); special AACI with a 12cm 30 tubes rocket laucher Kai Ni for Ise/Hyuuga/Musashi (this one ability is not important, though you may still want to use the expansion on them for the reasons below)

Slow ships can turn fast with a turbine on expansion slot and a boiler on a normal slot, so some slow ships benefit greatly with an expansion slot ex. Musashi (K2), Yamato, Nagato K2 (aka almost all slow BB), oiler ships (one you like from Hayasui/Kamoi), Akitsumaru (very situational), SS(V) (just one for cheesing purpose, I-13 or I-14 is the best), Commandant Teste (situational), the list goes on.

Aviation Battleships, Aircraft Carriers, Seaplane Tenders, and Aviation Cruisers can avoid airstrike attack with a 12cm 30 tubes rocket K2 in expansion slot. This is situational too.

Finally, every ship will get benefit from an expansion slot in one way or another (aside from above, there are damecon, extra AA gun, extra armor with bulge, ...) so don't be shy to use one on the ships you sorties the most.

TL;DR:

- One for Maya K2, 2nd one for 1 - 2 Akizuki class

- Next one(s) goes to slow ships of your choice (personal recommend is Musashi K2, I-13/I-14, Hayasui/Kamoi (don't need to holepunch them AO if you're completely new though)

-Yura/Suzuya/Kumano K2 (they're for medium/advance player)

- You waifu(s) and ships you sorties the most

- Save at least one expansion slot before an event if you can so you can holepunch the ship needed in the event.