Here's a simple tight convoy formation of the Accel carrier and 13 other Accel default ships ---destroyers, cruisers, and cargo supply ----I use.
The ships will sort themselves to a bit different formation if you give a command to turn 90 degrees. You can add wind or leave it out, even using the 10 degree turn to head into the wind, turning as many times as you need.
You can change the distances as well but I wanted a tight formation in this case.
This is pasted onto the cvn_id cfg using notepad. The file is in programfiles/AICarriers/conf.d and you must number the formation..xx to the next number. For me that is 15.
Then, I change out the carrier for this Nimitz,



[formation.15]
title=big fleet
unit.0=veh_carrier01_high_detail_sm, 0, 0
unit.1=veh_cruiser01,-500, -300
unit.2=VEH_cruiser01, 0, 800
unit.3=VEH_cruiser01, 1200, 0
unit.4=VEH_cruiser01, -1200, 0
unit.5=VEH_destroyer01, 400, -400
unit.6=VEH_water_tanker03_sm, -400, -400
unit.7=veh_cruiser01,-500, -800
unit.8=veh_destroyer01,-700, 500
unit.9=veh_cruiser01,600, -400
unit.10=VEH_destroyer01, 900, -400
unit.11=VEH_water_tanker03_sm, -1000, -400
unit.12=VEH_water_tanker03_sm, 1000, -400
unit.13=VEH_destroyer01, 1100, -400