Kate Middleton Duchess Crushess Prince Wills at Sea

4/11/2014 6:00 PM PDT BY TMZ STAFF

Kate Middleton and Prince William went racing in New Zealand ... in his and hers freakin' yachts!!

Anyway, he who wears the bigger crown doesn't always win -- 'cause it turns out the Duchess knows how to work a captain’s wheel.  

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