The famous Frigate Captain, Lord Cochrane was carried on different ships book's from the age of 5. This position eventually evolved into a Naval Cadet position in 1843 and is still with us today. The true Servant, tended to be the 3rd Class Boys. The other boys may have had some of the duties but the 3rd Boys did this as their primary job. On the watch schedule, servants were considered Idlers not assigned to a particular watch.
Pay is as discussed in the other two sections.