What structure on the South African coast has a range of 63 km and releases flashes every 30 seconds?
Cape Point Lighthouse
The new lighthouse, located at 34°21′26″S 18°29′49″E, cannot be seen from the West until ships are at a safe distance to the South. The light of the new Cape Point lighthouse is the most powerful on the South African coast, with a range of 63 miles (101 km; 55 nmi) and an intensity of 10 megacandelas in each flash
Cape Point is a promontory at the southeast corner of the Cape Peninsula, which is a mountainous and scenic landform that runs north-south for about thirty kilometres at the extreme southwestern tip of the African continent in the Republic of South Africa. Table Mountain and the city of Cape Town are close to the northern extremity of the same peninsula.
The cape is located at 34°21′26″S 18°29′51″ECoordinates: 34°21′26″S 18°29′51″E, about 2.3 kilometres (1.4 mi) east and a little north of the Cape of Good Hope on the southwest corner. Although these two rocky capes are very well known, neither cape is actually the southernmost point of the mainland of Africa; that is Cape Agulhas, approximately 150 kilometres (93 mi) to the east-southeast.