Pirate bar on a shipwreck

[Cunning Cartographer]

And we all know there's only one way to let your patrons know it's closing time... set off the canon.

As for features that aren't just fluff, or for making this more of an encounter map, what if some of the crew didn't quite die all the way and below deck there is an old zombie captain so in the event there are unruly patrons "Throw him to Grey Pete, he'll make a meal of him", nice little one on one encounter

Also if you changed the positioning of the entrance and people came in through the front of one of the ships then you could have the ships figurehead to be enchanted and acts as the bouncer, instant diplomacy skill checks or combat checks to get past the large wooden armed golem-esq critter.