deck

The top surface of a surfboard, gently convex as a rule; the area upon which the rider stands. While bottom design has always been a hot topic among board-makers, the deck's design has generally been a matter of increasing or decreasing a board's flotation: greater convexity (or "dome") to increase buoyancy, near-flat or flat to reduce buoyancy. Concave decks and split-level "step decks" have been...