Captain's Hat

The Captain's Hat is a mask in.

Location
To obtain the mask, Link must awaken Captain Keeta from where he rests near the Ikana Graveyard using the "Sonata of Awakening." Then, he must proceed to defeat him. He will submit to Link's power, and tell him of the defeat he suffered while serving as the commander of the Ikana Army. After making his final request, he shows the hero a Treasure Chest containing the Captain's Hat and takes his leave. Link must then use the Hookshot to claim the mask.

Uses
The hat is designed to look like Captain Keeta, and as such, displays itself as a symbol of authority. Anyone who wears it is immediately mistaken for Captain Keeta. This causes Stalchildren to not attack Link, and will in fact allow him to communicate with them and command them to do his bidding. This feature can be used in the Ikana Graveyard to open the graves that lead Beneath the Graveyard. In here, Link can find the "Song of Storms," a Piece of Heart, and a Bottle. Link can also use the mask in the Oceanside Spider House to obtain another Piece of Heart by solving the secret puzzle of the house.

The mask can also be used to make ReDeads dance while ignoring Link.

Trivia

 * If Link wears the mask right before he battles Igos du Ikana, he will think that Link is Captain Keeta. The game will go into a short cutscene before returning to the battle.
 * This is one of the few non-transformation masks that is required to finish the game. It is required to enter the grave where Link learns the "Song of Storms."