The Chine, or outer spray rail, usually has it's underside just about horizontal, or just turned down slightly.
A reverse chine, like that that of the revengers, has a very steep 'downturn' on the chine.
This is to reduce or eliminate the tendency to instability in roll, or chine walking.
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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