An Arab boat? Yes, indeed! (3,3)

I believe the answer is:

and how

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

'an arab boat? yes indeed' is the definition.
I can't tell whether this defines the answer.

'an arab boat?' is the wordplay.
'arab boat?' becomes 'dhow' (I've seen this in another clue).
'an'+'dhow'='AND HOW!'

Can you help me to learn more?

(Another definition for and how that I've seen is " Certainly".)

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