This craft will upset the lotteries (5)

I believe the answer is:

sloop

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'this craft' is the definition.
(sloop is a kind of craft)

I cannot understand how the remainder of the clue works.

(Other definitions for sloop that I've seen before include "One-masted sailing ship" , "One-masted sailing boat" , "one going to sea" , "Single-masted sailing vessel" , "craft" .)

I've seen this clue in The Irish Independent.

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