Sector light Authorities). For example, the United States uses a signalling stereotype which is the opposite of Europe. In USA, the red light indicates the starboard side of the channel for harbour bound vessels, while the green light indicates the port side of the same channel. An expression to remind of this is "red right returning". An example of a sector light is the light of the Fisgard Lighthouse in British Columbia. The lighthouse as built to guide ships through the entrance of Esquimalt harbour. The white sector is an isophase light of 2s from 322° to 195°. If the ship sees
Port Sanilac Light Fenestre of Paris. The lens and its brass reflector on one segment (the reflector blocked the lens on the landward side) send the light out in a 300 degree arc across the lake. Its focal plane is shines a beam of light visible for up to in all directions, thus closing most of the -gap mentioned above. The light sits atop high ground at the head of a small bay. This is one of only 70 such Fresnel lenses that are still operational in the United States, sixteen of which are use on the Great Lakes of which eight are