Does anyone know of any good pirate mods, with quests

A two second search on Nexus with the word "pirate" would have netted you these easily. :rolleyes:

http://www.tesnexus.com/downloads/file.php?id=21767
http://www.tesnexus.com/downloads/file.php?id=29608
http://www.tesnexus.com/downloads/file.php?id=5385

and there are others. Try a search for various pirate related key words.