This is one of the free PDFs offered for High Seas: Gravetide collection.

Skeletal Pirates ravage the town of Burazliv, disrupt a joyous celebration and spirit away the townsfolk. To rescue them, set sail to Hangman's Noose, a mysterious island that conceals ancient secrets, perils, and unlikely allies. Can you and your companions triumph over the undead corsairs or you will succumb to the influence of their necrotic power?