Board Thread:Game Updates/@comment-3502824-20180328015558/@comment-32647310-20180331035225

Vcharng wrote: Well then the USN are wrong, easy and simple. Also, the USN identifies RN Frigates as "PF", so if they really say that, they are saying the DE=PF, which is definitely wrong. It is also a common practice to refer to the Matsu-class as DE, which is clearly larger than the Kaiboukans. No, it means that the USN treated/identified RN Frigates as PFs and IJN Kaibokans as DEs because that is what the role those ships had.

Remember, the USN identifies and classifies ships based on their battlefield role. Hull size, displacement and equipment is not as much of a factor unless those things dictate a ship's role.

...and for greater hilarity at some point, the USN decided to dump all the different designations that were running around for these ships and just call them all 'Frigates' (FF).

The fact of the matter is that different nations have different methods and means of identifying their stuff and the stuff of other nations. This does not make any one description more or less correct (or incorrect), just different.