Talk:Summer 2019 Event/@comment-2001:8A0:7A5A:2F01:E884:59D3:1B75:3BC0-20190908093052/@comment-31999758-20190908105006

In combined 1 underway give only 15% to fleet instead of 30%, if you use 2 you get double ammo, so more damage, just check underway replenishment item inside this wiki, you get full explanation there