Ghosts of Saltmarsh is a compilation of modules that can all work together as an overarching campaign. It comes with a well-fleshed out town and some nice hooks and story springboards. I recommend this collection for anyone running a campaign in a coastal area. The modules go up in level as they go, so you can easily use the modules as they become level-appropriate.
In my own campaign, I have located the town on Saltmarsh a small distance north of the town of Daggerford (colloquially called "Riverport" in my world). As the Class of '81 find themselves in that area frequently, and the Riverport Rebels live in...wait for it...Riverport, this works great for both my campaigns.
