A heavy metal plate hinged inboard above a scuttle that can be lowered and secured by butterfly nuts. Used to protect the glass of the scuttle in heavy weather or in battle and as a means to prevent any lights being seen from outside when the ship is darkened.
Yintsimbi esibaca enzima exhonywa ngaphezulu kwizikroba ezineziciko ezinokuhliswa zize zikhuselwe ngenathi ebubhabhathana. Zazisetyenziselwa ukukhusela izikroba ezineziciko zeglasi kwimozulu embi okanye emfazweni kunye nokuthintela nakuphina ukukhanya ekubeni kungene ngaphakathi enqanaweni xa kwenziwa kwamnyama ngaphakathi.