A hole through the upper deck of a vessel, used to ventilate the cabin below. Normally fitted with a curved open cover to let in air, but not sea spray. In heavy weather, the dorades should be closed entirely, to keep waves out of the cabin.
A yacht ventilation system named after the winner of the 1931 Transatlantic and Fastnet races: the Dorade. It consists of a single-chamber box with a baffle between the air intake and the interior air feed. Normally air is fed into the dorade through a cowl vent. The purpose is to allow air to enter while water is kept out and drained.