Power booster tub or craft (5)

I believe the answer is:

turbo

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'power booster' is the definition.
The definition suggests a singular noun which matches the answer.

'tub or craft' is the wordplay.
'craft' is an anagram indicator (the solver must craft the letters).
'tub'+'or'='tubor'
'tubor' with letters rearranged gives 'TURBO'.

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(Other definitions for turbo that I've seen before include "motor" , "Engine supercharger" , "Pub torpor (anag) - type of aircraft" , "found in car" , "source of power" .)

I've seen this clue in the Sydney Morning Herald.

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