No marinas need to be built in a landlocked country (3,6)
I believe the answer is:
san marino
'a landlocked country' is the definition.
'no marinas need to be built' is the wordplay.
'need to be built' indicates an anagram.
'no'+'marinas'='nomarinas'
'nomarinas' anagrammed gives 'SAN MARINO'.
'in' is the link.
(Other definitions for san marino that I've seen before include "Person not holding generally accepted beliefs" , "Tiny European republic" , "Europe's smallest republic" , "Small independent republic in NE Italy" , "town in Northern Italy" .)