Can't Get to Solstheim

[Guest Dwalters]

I've finished the civil war. The ship and captain I'm supposed to talk to isn't in windhelm, I have the legendary edition for 360 and I'm upto the elder knowlwdge quest on main quests... Am I missing anything? lvl 49 almost every location Accross skyrim has been visited or is on map but not cleared or visited....

[David]

You only have to complete "The Way of the Voice" (a part of the main quest-line you've already completed) to go to Solstheim. After you complete that quest, cultists will  randomly appear and attack you. If you search them, you find "Cultists Orders." Reading those orders are what will launch the quest and direct you to the Windhelm docks.