Talk:Akashi's Improvement Arsenal/@comment-25311580-20160421152604/@comment-109.51.120.126-20160425122046

^ IMO, just leave them as is. Focus on other upgrades (sonars, light guns, medium guns). You'll get a couple of proto 35.6cm triples from quest rewards, eventually. Check the Quests page to find out which ones.

For one of the proto 35.6cm triples, you need to unlock all 4 fleets, do the whole marriage questline, and finally have all 4 Kongou sisters Kai Ni. This means have all Sendai sisters, all Myoukou sisters and all Kongou sisters, plus one married shipgirl. This is mostly composition quests. Quest A40 rewards this one, track back what else is needed by clicking the required quests.

For the other proto 35.6cm triple, you need some Mutsuki-class DDs, notably Uzuki and Yayoi, some Asashio-class DDs, the 4 Takao sisters, 2 submarines and a couple other easy to get shipgirls. Mostly composition quests, but ends in a sort of trollish way: 4 Mutsuki-class DDs to 1-5 and then Haruna Kai Ni as FS to 5-1. Quest B27 rewards this one, track back what's needed by clicking the required quests.

For the proto 41cm triples, you need both Fusou sisters Kai Ni'd. It's their stock equip, but need a blueprint each. Each upgrade on the proto 41cm triples eats 2x 41cm twins, up to +6. You can get 41cm twins from Nagato-class BBs or try recipe 10/210/200/10 with a BB flagship.

For the whole 38cm family, you need Bismarck (stock equips and also needs 2 blueprints), and that means you need Z1. Although Z1 is now a drop from 4-5, I would recommend you to complete the Z1 questline, and that requires 4 different submarines for Expedition 30. Completing the Z1 questline would ensure that the Z1 you get as reward is able to bait Bismarck and Z3 out of construction.

Hope this helps.