Reprimand sailor (6)
I believe the answer is:
rating
This clue is a double definition.
'reprimand' is the first definition.
(I've seen this before)
'sailor' is the second definition.
(British term for a naval enlisted man)
(Other definitions for rating that I've seen before include "Position on a scale" , "Non-commissioned sailor in the Royal Navy" , "Salt" , "level" , "How many watched TV" .)