An occupant support such as a bed 20 includes an articulable deck 34 having an upper body section 44 and a section 46 or 74 longitudinally adjacent to the upper body section. The system provides a user interface for selecting subject matter of interest to a user as well as various components for retrieving information items, for classifying information items to identify information items relating to the selected subject matter, for rating the identified information items, and for notifying the user about identified information items meeting a predetermined criteria. The tubes are filled with helium to provide extreme buoyancy and also function as the overall framework of the ship.