From publishers' website:

Set Sail!

Batten the hatches and sail off toward the horizon on this classic four-deck ship—fully equipped with cannons, sleeping quarters, cargo holds, and more. With the rolling expanse of the deep blue sea on the flip side, you'll be ready for all manner of nautical adventures!

The most-popular Pathfinder Flip-Mats in history return! These fan-favorite maps feature versatile adventure settings—city streets, forests, ships, taverns, and more—and now they're back for a repeat performance. Durable and lavishly detailed, these essential adventure set pieces are sure to bring excitement to your game table for years to come!