A cry of "Ship ahoy!" (3)

I believe the answer is:

pah

I'm a little stuck... Click here to teach me more about this clue!

'a cry of ship ahoy' is the definition.
I can't judge whether this defines the answer.

'of ship ahoy' is the wordplay.
'of' says the answer is hidden in the clue.
'PAH' is hidden within 'ship ahoy'.

Can you help me to learn more?

(Another definition for pah that I've seen is " Expression of disgust".)

I've seen this clue in the Evening Standard.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.