Color, defined through: value (how light or dark it appears) hue, how cool or warm it appears, and chroma, how bright or muted it appears. Through these three elements, were developed the four principal groups, palettes called: Spring, Summer, Autumn, and Winter.
jam39vw995.The chine is the hard edge where the side of the boat meets the bottom.
The forward (leading) edge of the sail is called the luff, which, in a mainsail, is parallel to the mast. The aft (back) edge of a sail is called the leech (also spelled leach), which is opposite the luff, and forms the hypotenuse of the triangle.