Abstract: The present invention discloses a system for controlling environmental conditions in connection with ceiling hatch use particularly on watercraft. The invention generally comprises a support platform, a means for suspending the support platform, a water diversion conduit cooperatively associated with a water exhaust aperture in the support platform, and a water collection and containment structure for collecting and containing fresh water. The platform is suspended from a watercraft hatch for capturing and diverting water away from the watercraft hatch, yet allows continual airflow, heat exchange and filtered light to enter the hatched cabin. The means for suspension includes a means for easily removing the platform from the path of egress through the watercraft.

Abstract: The present invention discloses a system for controlling environmental conditions in connection with ceiling hatch use particularly on watercraft. The invention generally comprises a suspended support platform, a water diversion conduit cooperatively associated with a water exhaust aperture in the platform, and a water collection and containment structure for collecting and containing fresh water. The platform is suspended from a watercraft hatch for capturing and diverting water away from the watercraft hatch, yet allows continual airflow, heat exchange and filtered light to enter the hatched cabin. The platform is suspended so as to allow for easy removal of the platform from the path of egress through the watercraft. Manually adjustable baffle structures may be included at the perimeter of the platform to allow for prevention of wind blown rain from escaping the platform through the opening between the water collection receptacle and the underside of the watercraft deck.