Marine surface vessel comprising an air ventilated hull

A marine surface vessel comprising an air ventilated hull, and a deck, wherein the vessel comprises at least one air conduit leading to at least one ventilation opening beneath a waterline of the vessel, the at least one air conduit being arranged to guide air to the at least one ventilation opening, the at least one ventilation opening being provided for air ventilation of the hull, wherein the deck is at least partly surrounded by a gunwale, wherein the at least one air conduit is arranged to guide the air from at least one water drainage opening, wherein the at least one water drainage opening is arranged to drain water from the deck, wherein the water drainage opening is located at a lowest part of the deck, the vessel comprising one or more non-return valves arranged to prevent water from being transported through the at least one air conduit from the at least one ventilation opening to the at least one water drainage opening.