From publisher blurb:
Ten encounters easily dropped into any campaign at sea. Flesh out the boat trips.
Comes with 10 encounters, 30 adventure hooks, and a new monster.
Bandits, Beasts, Combat, a Dragon Turtle, Fey, Ghost, Giant Shark, Humanoids, Merfolk, Sahuagin, Sea Hags, Skeletons, Skill Challenges, Undead, Werewolf, and a Young Bronze Dragon