Threat From the Sea
Speak to Katar in the Swamp of Sorrows.
While I begin work on your weapon, why don't you talk to Katar? He mentioned needing help with patrols along the beach, and I'd rather see you keep your wits and weapons prepared instead of getting drunk with some of the other louses I share this camp with.
Be silent a moment, <class>. Even over the dull roar of the sea you can still hear those disgusting gurgles from the fish men.
The entirety of this quest happens at Swamp of Sorrows