Squadron’s consumables Modification 1 (slot #5):
Bonus to the action time of a squadron’s consumables increased from 30% to 50%:
The upgrade was inferior in efficiency to other upgrades in the fifth slot.
Enhanced Countermeasures (Worcester unique upgrade, slot #5):
Bonus to the action time of the “Surveillance Radar” consumable increased from 10% to 20%.
This bonus is being increased to emphasize the difference between the unique Worcester upgrade and the new “Ship’s consumables Modification 1” upgrade, which will be available to other ships in the same slot while having similar bonuses.
Also, many of you have raised concerns about how some of the new upgrades may affect game balance. For example, the upgrade “Torpedo protection system (slot #5)” may be too effective against ships equipped with low-detectability torpedoes. During testing, we will closely monitor the impact of the upgrades on game balance and, if necessary, make additional changes.
Source: WoWS Devblog