Water Skis Terminology Bevels - the transition area between the ski's sidewall and the ski's base. Sharper, flatter bevels keep the ski riding smoother, rounder and higher in the water.
Larger bevels allow the ski to ride deeper in the water.
Fin - the underwater foil on the tail of the ski that aids in turning and tracking. Fin box - the device that secures the fin to the ski and allows the fin to be adjusted fore and aft, as well as up and down. Length - the measurement in inches from the ski's tip to tail. Longitudinal flex - the measured amount in which the ski flexes along its length. Profile - the outline of the ski when viewed from the top or bottom.