Spray deck

Traditional akuilisaq (left) and tuilik (right), ~1893 sketch.
A kayaker with water washing harmlessly over his stern and the rear of his spraydeck.

A spraydeck (sprayskirt in N. America, akuilisaq or tuiitsoq in Greenland) is a flexible waterproof cover for a boat (in particular for a kayak or a canoe) with holes for the passengers' waists. Spraydecks are used to prevent water from entering the boat while allowing passengers to paddle or row.

Spraydecks are used in breaking waves, on whitewater, in inclement weather, and in splashy sports. An alternative is the tuilik.