pf2e.fyi
From Pathfinder Society Scenario #4-17: Trapping the Hag's Claw, which isn't enabled.

Darkened Shadow Cannon (4-17)

COMPLEX HAZARD 5
Stealth +13 (trained)
Description A cannon built of cast iron and infused with shadow magic, mounted on the side of Aslynn's flying ship.

Disable DC 24 Arcana or DC 24 Thievery to disrupt the cannon; two checks are required to disable it

AC 23; Fort +17, Ref +10
Hardness 10, HP 50 (BT 25)

Load the Cannons
Trigger The ship flies within 30 feet of a PC

Effect The cannon reloads and rolls initiative.
Ranged Cannon Blast +15 (reload 2, range increment 40 feet), Damage 2d8+5 bludgeoning

2d8+5 bludgeoning damage to creatures in a 5-foot burst (DC 21 basic Reflex save)

Routine (three actions) The cannon fires a blast that contains as many PCs as possible, choosing randomly in the event of a tie, then reloads.
Pathfinder Society Scenario #4-17: Trapping the Hag's ClawOGL