Disclosed is a window housing for use in combination with a transducer style thru-hull fitting. The window housing is sealingly attached to the thru-hull fitting by use of a first securement cap. The window housing having a window panel positioned adjacent to the outer side surface of the vessel hull. A tubular shaped light assembly preferably housing LED's may be inserted into the window housing and secured thereto by the use of a second securement cap. Alternatively a tubular shaped camera assembly may be inserted into the window housing and secured thereto by the use of a second securement cap.