Currently I have fleet logistics of 110, yet the fleets seem to top out at 64. I.E., I have a fleet consuming 64 logistics points and cannot add any other ships - even tiny fighters with only 1 logistic point.
Funnily enough, I was previously able (before turn 600) to field fleets of 110 logistic points yet these are all huge capital ships with no fighters. Am still deploying said capitol ship fleets of 110 logistical abilities.
Full disclosure - Ludacris galaxy, 21 opponents, all the DLC's (sans Mega Events) and the latest opt in beta/patch
luceo non uro