"Post captains may be very good sort of men, but they do not belong to us"

 Post-Captain (now an obsolete term) was the name given to those who actually held the rank of Captain in the Royal Navy. As the title 'Captain' was given to any officer who commanded a ship, regardless of rank, the term 'post-captain' was a means of distinguishing those who held the rank of Captain.


Etching of a Post-captain's uniform (1807)
Public DomainEtching of a Post-captain's uniform (1807) - Credit: John Augustus Atkinson