Pilot in the marina, perhaps (6)
I believe the answer is:
airman
'pilot' is the definition.
(someone who flies aircraft)
'marina perhaps' is the wordplay.
'perhaps' indicates an anagram.
'marina' anagrammed gives 'AIRMAN'.
'in the' acts as a link.
(Other definitions for airman that I've seen before include "crew member" , "Pilot" , "He flies" , "Male flyer" , "Marina (anag)" .)