Wouldn't it be nice!

Do you know where the strait of this map is?

Although this strait is outside Japan, a Japanese discovered this. At the beginning, this strait was called in the name of the discoverer. However, it is another name now. I have no blood relationship with him. However, I do not want to lose the true name of the strait as a Japanese.
It will be my next goal there. I have the preparation for it HUGE!