Rudder-shift time decreased from 10.5 to 9 seconds.
Update: February 2021
This is a graph projection of the official source: 11 indexed events, 5 resolved affected ship pages, plus raw projection keys for entities that do not yet map cleanly to a page.
Affected Ships
Indexed graph events
Repair Party modified—it now restores the same amount of HP but over 9.3 seconds instead of 27.
Main battery reload time reduced from 5 to 4.5 seconds.
Extremity armor improved from 16 to 25 mm.
Base number of charges for Sonar increased from 1 to 2.
Main battery reload decreased from 13 to 12 seconds.
Torpedo reload time reduced from 96 to 72 seconds.
Repair party modified—it now restores the same amount of HP but over 10 seconds instead of 28.
HP restored to citadel by Repair Party increased from 16% to 25%.
Shell grouping improved by about 2.6%, and in so many words, it's just a slight buff to the accuracy.
Main battery reload time reduced from 17 to 16 seconds.
Raw affected graph keys
charlemagne, cheshire, cossack, duke of york, vanguard