Cooldown changes by ship-module upgrade. The baseline figure shows on the stat strip above; this table is the full picture including which modules stack and how.
| Configuration | Cooldown |
|---|---|
| Standard | 4m |
| With Morale Augmentation | 3m 48s |
| With Zero-G Breech Loading | 3m 36s |
| With All Upgrades | 3m 25s |
Reference data from helldivers.wiki.gg/wiki/Orbital_Napalm_Barrage.