Located where the tides turn (5)
I believe the answer is:
sited
'located' is the definition.
('site' can be a synonym of 'locate')
'the tides turn' is the wordplay.
'turn' is an anagram indicator.
'tides' anagrammed gives 'SITED'.
'where' is the link.
(Other definitions for sited that I've seen before include "installed" , "Put" , "Situated" , "Placed, located" , "Positioned" .)