The most common and most likely answer to this crossword clue is the 4 plus 4 letter word CAPE TOWN
C
A
P
E
T
O
W
N
More clues leading to the result CAPE TOWN
- Clown getting a pet for pounds in capital
- African city a clinic a pet-owner’s got inside
- Better move to new African city
- Better public school’s secured with foreign capital
- City in California favourite to occupy
- A cop went crazy in African city
- Going around current favourite and individual port city
- Stole to initially maintain city
- Dynasty of French kings with private capital in Africa
- City conflict ends with weapon deployment
Buddy explains!

The straight part
We know that "city on Atlantic" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case city on atlantic = cape town.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.