http://nationalpost.com/news/world/navy-rescues-honolulu-women-who-were-lost-at-sea-for-monthsRemarkable. Three months at sea, finally rescued, and in good condition. 
They obviously had a ton of skills and had prepared for the worst with a massive stash of food and water. 
Though I'll bet that after 30 days they would have gladly exchanged their life savings for a PLB.