The most common and most likely answer to this crossword clue is the 6 letter word BEIRUT
I've seen this crossword clue in The Times
B
E
I
R
U
T
More clues leading to the result BEIRUT
- Coastal road announced for port
- Flutter involving one sport generates capital
- Do you say coastal road leads to port?
- City tribe rioting outside university
- Coastal roadis capital
- City announced part of coastal path
- That’s coming up in dry city
- From around the globe I ruthlessly acquire capital
- Radical element attached to plant reported in Middle Eastern city
- Bombshell America’s dropped for Iranian revolutionary leaders in Middle Eastern capital …
Buddy explains!

The straight part
We know that "port" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case port = beirut.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.