Do you know!

Chine is a sharp corner on either side where the hull bottom meets the boat sides, which usually run from bow to stern, curving upward at the bow and disappearing underwater near the middle of the boat.

Chine Type:

There are three type of chine;

a) Hard (angular)
This type typically seen on a semiplaning or planning boat and is intended to throw spray to sides of the hull and prevent water from rising up the hull sides where it increases drag. Deep V type boats generally have wide flats at the chines to contribute additional lift.

b) Soft (rounded)
Soft chines describe a sharp turn in the hull section but not a hard corner. This chines type give a smoother ride in a seaway than hard type chine, and a flatter bottom with higher speed potential than a round-bilge displacement design, but their top speed is not as high as a previous type chine. A boat with soft chines will have spray rails forward to break the suction of wave climbing in the bow.

c) Reverse
This type of chines actually turns downward toward the water surface as in a “Boston Whaler”. This chine usually forms a “tunnels” like look on either side. When the boat is underway, water thrown out by the center hull is deflected downward by the chines and as a result it provides additional lift. Normally, because of the tunnels on either side of the hull give minicathedrals look, the hull shape is often called as a cathedral hull.