Suitable seas for clippers and cutters? (6)

I believe the answer is:

choppy

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'suitable' is the definition.
Both the definition and answer are adjectives. Perhaps there's a link between them I don't understand?

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for choppy that I've seen before include "(Of the sea) a bit rough" , "Describes a rough sea with small waves" , "Moderately rough (sea)" , "Somewhat rough (sea)" , "Jerky" .)

I've seen this clue in the Evening Standard.

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