Capt / Commander - 1774-1787
RN Master & Mate - 1787-1807
RN Surgeon - 1787-1805
RN Purser - 1787-1807
RN Warrant Officer - 1787-1860
RN Midshipman - 1787-1812
RN Volunteer Gr.I - 1787-1812
RN Instructors - 1727-1842
RN Engineer 1st Cl. - 1837-1841
Var. 01 . . . 1774 - 1860
In use 1774 - 1860