The most common and most likely answer to this crossword clue is the 5 letter word AVAST
I've seen this crossword clue in Financial Times
A
V
A
S
T
More clues leading to the result AVAST
- Stop when all at sea, maybe, with a Jumbo
- Initially alerted by Titanic, stop at sea
- A considerable call to quit
- A huge order for ships
- At sea stop son boarding a vessel
- A great stop!
- Stop! Satnav is wrong
- A great stop for sailors
- A vehicle’s stopped short on street! Stop!
- Stop at sea initially alerted by Titanic
Buddy explains!
The straight part
We know that "Stop at sea" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case stop at sea = avast.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.
What does AVAST mean?
AVAST interjection- Hold fast!; desist!; stay!.
- (in imitation of pirates) listen!; pay attention!