Film showing disaster at sea (5)

I believe the answer is:

slick

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'film' is the definition.
(I know that slick is a type of film)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for slick that I've seen before include "Glibly assured" , "Smart" , "polished performance" , "Meretricious" , "Showing Polish" .)

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

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