Treasure Chart

Treasure Charts are items in that are used by Link to help him find treasure. Such treasures include Rupees and Pieces of Heart. The treasure is found by using the Grappling Hook in the Great Sea, at the location shown on the map and marked out by a pillar of light which disappears when Link approaches. There are a total of 41 Treasure Charts, each of which leads to a treasure which, once found, is marked on the Sea Chart, to indicate that the treasure in that square is already found and any unobtained treasures are in another square.

Charts and Locations
The charts are numbered in-game, though this order isn't necessarily consistent with the place appearance or availability order.