From Zelda Wiki.org
Near the end of
The Wind Waker the
King of Red Lions informs
Link that to return to
Hyrule he must find the eight
Triforce Shards to reform the
Triforce of Courage. However, he could not find them without the help of the
Triforce Charts. When Link found them, he couldn't read them, so he had to take them to
Tingle Island and have
Tingle decipher them. The location of the Triforce Shards was then shown on the
IN-credible Chart.