Nautical assent (3)

I think it could be either:

Which length description are you looking for?:

aye

'nautical assent' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for aye that I've seen before include "An affirmative vote" , "Entirely one" , "Word of assent" , "Yes vote" , "Affirmative answer" .)

I've seen this clue in the Newsday, The Star Tribune and the Universal.

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