Ranongga is an island located in the New Georgia Islands group of Western Province, Solomon Islands. History Ranongga was sighted in 1787 by sailors Read and Dale. On August 18, 1959, a seismic sea wave was generated off the west coast of Ranongga Island, at 08 hr 05 min. Soon after, large waves were observed soon in Vori, on the northern coast of the island. The sea receded by 15m and then returned to its original position. Geography Ranongga is a 28 km long, narrow island, located 8km north-ea… (More on Ranongga)