The Common Fleet Alliance adopted the Independent Evaluation System around two-hundred years ago.
Before this time, every naval fleet, group or individual warship interpreted the evaluation standards differently.
Perhaps one naval captain prized learning ability over motor coordination.
Bookish Fleeters gained merits more easily than those who were able to manipulate instruments better.
Perhaps one admiral wanted his subordinates to be more cautious and conservative in their decision making.
In that case, those who were brave and more willing to take risks did not have a good time in this admiral's fleet!
Over time, the differences between different naval units became more pronounced for that reason. While diversity was not necessarily a bad thing, the Common Fleet Alliance abhorred uncontrolled deviations.
The CFA always placed a very high emphasis on standardization!