| Ship | Extra Requirement | 
|
|
|
|
|
|
|
Note |
|---|---|---|---|---|---|---|---|---|---|
US Battleships   
|
(★0-2) | +1 | +1 | Non-stackable [1] | |||||
| (★3-4) | +1 | +2 | |||||||
| (★5-7) | +1 | +2 | +1 | ||||||
| (★8-9) | +1 | +3 | +1 | ||||||
| (★MAX) | +2 | +3 | +1 | ||||||
Other US Ships  
|
(★5-9) | +1 | Non-stackable | ||||||
| (★MAX) | +1 | +1 |
- ↑ Bonuses were the same as "Other US Ships" prior to 2021-04-30