what is Attack CoolDown of both V3 Launcher and dreadnought?

[MapDesigner 41]

guys I found 2 CoolDown for v3 launcher and for dreadnought
what is the other one used for?
one defined in the weapons
and the other one is defined in the unit itself (spawned unit reload time)
let me send them here
;Soviet Dreadnought
[DRED]
UIName=Name:DRED
Name=Dreadnought
Prerequisite=NAYARD,NATECH
Primary=DredLauncher
CanPassiveAquire=no ; Won't try to pick up own targets
Spawns=DMISL
SpawnsNumber=2
SpawnRegenRate=80
SpawnReloadRate=0 ; missile spawn don't come back
---------------------------------------------------------------------------
; V3 Rocket launcher, or Chu-chu Rocket
[V3]
UIName=Name:V3
Name=V3 Launcher    ;locked
Category=AFV
Prerequisite=NAWEAP,NARADR
Primary=V3Launcher
CanPassiveAquire=no ; Won't try to pick up own targets
Spawns=V3ROCKET
SpawnsNumber=1
SpawnRegenRate=400
SpawnReloadRate=0 ; missile spawn don't come back

/////////////***************on the other hand, if we check missiles******************/////////////////////
; Dreadnought missile
[DredLauncher]
Damage=50
ROF=50
Burst=2
Range=25
;Range=-2
MinimumRange=6; the missiles need time to align
--------------------------------------------------------
; V3's rangefinder virtual weapon
[V3Launcher]
Damage=2
ROF=150
Range=18
MinimumRange=5
--------------------------------------------------------

my guess we should go for the unit one not the weapon one right?

[McPwny 157]

SpawnReloadRate= is used on the aircraft carrier and has to do with how fast the units get back into the carrier. 

the way that missiles and aircraft are spawned uses the same logic, but obviously the missiles dont return to the thing that fires them so the tag is set to 0.