Rescue boat turning up with no good whale carcass (5)

I believe the answer is:

krang

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'whale carcass' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'rescue boat turning up with no good' is the wordplay.
'rescue boat' becomes 'ark' (rescue boat during the biblical flood).
'turning up' is a reversal indicator.
'with' says to put letters next to each other.
'no good' becomes 'ng' (abbreviation).
'ark' back-to-front is 'kra'.
'kra'+'ng'='KRANG'

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I've seen this clue in The Independent.

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