a wood or metal structure built over a weather-deck opening to afford light and ventilation to the spaces below. The top covers are flat or pitched and are provided with hinges. They can be raised or lowered by screw gear from below. Brass rods are frequently fitted over the glass for protection., lae valgusluuk. Keiluti klaasid on pealt kaitstud kaldrestiga. Ilusa ilmaga kasut keilutit ka õhutamiseks, tormi ajaks kaetakse keilut purjeriidest kattega.