A port stormy seas do reveal (6)
I believe the answer is:
odessa
'a port' is the definition.
(Odessa is a Ukrainian port)
'seas do reveal' is the wordplay.
'reveal' indicates anagramming the letters.
'seas'+'do'='seasdo'
'seasdo' is an anagram of 'ODESSA'.
'stormy' is the link.
I am not very happy about this link. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for odessa that I've seen before include "Port city on the Black Sea" , "Ukrainian Black Sea port" , "Ukrainian location" , "Seaport" , "Port city of Ukraine" .)