I'm reading the latest version of the rules while assembling some ships and was wondering something.
On page 20 it notes that capital ships have four systems, and on page 22 it notes that frigates have three systems.
Is that a mandatory number, or are ships allowed to carry a number of systems up to those limits? I'm assuming ships must carry their required number of systems since "up to" is not mentioned anywhere in that description, but I just wanted to be sure.
Cheers