Top nude cruise destinations

Ok so todays post is a bit tongue in cheek, but considering the response I got to my post about topless sunbathing on Royal Caribbean cruise ships there's clearly an interest out there for nude cruising. It's not going to be about naturist cruises per se, more about some naked beaches you could visit on some of the more popular cruise itineraries as a shore excursion. Feel free to recommend some more if you know of them, (and you're brave enough to admit to it!).