Treasure Chart 17
100 Rupees (at least)
Sunken Treasure #17
Treasure Chart 17 is one of the 46 Treasure Charts found in The Wind Waker.
Acquiring Treasure Chart
The Treasure Chart is given as one of the rewards for winning the Barrel Shoot mini-game, found at Spectacle Island. The mini-game is located one screen west of Windfall Island where Link will meet Salvatore. The game costs 50 Rupees to play and the first time that Link wins the game, he will earn a Piece of Heart. The second time Link wins will result in Link acquiring the Treasure Chart. Thus Link will need at minimum, 100 rupees to win this particular chart.
The trick to winning the Barrel Shoot is to only shoot cannonballs at angles which are increments of 5 degrees. So only aim at 15, 20, 25, 30, 35, 40, 45, or 50 degrees. After playing a few rounds, you will get a good idea of a rough estimate of the distance of the barrels. The closest one possible can be hit with the angle of 15*, with the furthest being 50*.
Speak with Salvatore to start the game
The corresponding Sunken Treasure can be found at Ice Ring Isle and it contains a Silver Rupee, which is worth 100 Rupees.