A ruinous craft (9)

I believe the answer is:

destroyer

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'craft' is the definition.
(destroyer is a kind of craft)

I cannot understand how the rest of the clue works.

(Other definitions for destroyer that I've seen before include "Type of warship" , "Butcher'" , "Wrecker" , "One who wrecks" , "One scuppers" .)

I've seen this clue in The Globe and Mail.

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