As we speak, pirates hired by the Golden Maw are assaulting the Sourcewell at Splintered Shallows with cannon-fire. If those salty dogs gain control of that Sourcewell, they will have quite a weapon at their disposal.
We must defeat these pirates and silence their cannons. Perhaps you can turn their own munitions against them.
Well done! It takes a rare breed indeed to pick up live munitions and hurl them back at the enemy. If the pirates had any sense, they'd stop handing us the means of their own destruction!