Sailor's assessment? (6)
I believe the answer is:
rating
I believe this clue is a double definition.
'sailor's' is the first definition.
(British term for a naval enlisted man)
'assessment?' is the second definition.
(I know that rating is a type of assessment)
(Other definitions for rating that I've seen before include "How many watched TV" , "Tar gin for a class of sailor" , "rebuke?" , "Sailor - assessment" , "Valuation" .)