International documents inconsistently refer to both the Straits of Tiran and the Strait of Tiran. There are several passages formed by the islands between Egypt and Saudi Arabia. The westernmost strait, between Egypt and the island of Tiran, overlooked by the Egyptian city Sharm el-Sheikh is the Strait of Tiran, wide. It has two passages deep enough to be navigable by large ships. The Enterprise passage, deep, is adjacent to the Egyptian side, while the deep Grafton passage, surrounded by shallows, is to the east, nearer to the island of Tiran. To the east of Tiran, between it and Saudi Arabia, the other strait has reefs and shallows with a single channel deep.