Luzon Strait

The Luzon Strait lies between Taiwan and Luzon, which is part of the Philippines. The island of Taiwan used to be called "Formosa". This is the name used on the old map shown. The Luzon Strait is an important waterway. It is at least wide. In most places it is about wide. There are two groups of islands inside the strait: 
The Bashi channel runs between Orchid Island of Taiwan, and Mavulis Island of the Philippines. Navulis is the northernmost of the Batanes group.