Sailor to remain turning right (7)
I believe the answer is:
mariner
'sailor' is the definition.
(mariner is a kind of sailor)
'remain turning right' is the wordplay.
'turning' is an anagram indicator.
'right' becomes 'r' (common abbreviation).
'remain' with letters rearranged gives 'marine'.
'marine'+'r'='MARINER'
'to' is the link.
(Other definitions for mariner that I've seen before include "Seafarer, old salt" , "Man of the sea" , "Probe" , "Person sailing" , "Bluejacket" .)