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Cook, however, had no such ship! (5)

Ross

I believe the answer is:

steam

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'cook' is the definition.
(I know that steam is a type of cook)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for steam that I've seen before include "Energy (colloq.)" , "Vaporous exhalation" , "Old-fashioned power" , "Driving force" , "Engine driver" .)

I've seen this clue in the Evening Standard.
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