The Grappling Hook is an item in The Wind Waker and Phantom Hourglass. It has similar uses to the Hookshot in other titles. By targeting a piece of wood, Link throws the Grappling Hook around it and swings on to a platform. It can also be used to steal loot from enemies before they are defeated. If Link is in his boat, using this item has the ability of searching for treasure in the ocean. The Whip in Spirit Tracks and Skyward Sword shares many of the same functions with the Grappling Hook.
The Wind Waker
In The Wind Waker, the Grappling Hook is given to Link by Medli in Dragon Roost Cavern after Link rescues her from some Bokoblins and Moblins. The Grappling Hook is a multipurpose item. It can hook on to certain objects so Link can swing over, it can steal item from enemies, and it can raise sunken treasure when Link is on his boat.
In Phantom Hourglass, the Grappling Hook is found the Temple of Ice. Unlike its use in The Wind Waker, the Grappling Hook can hook on to certain objects to pull Link towards it and can create a rope between two pegs so that Link can walk across it or so that it can deflect projectiles. Like its predecessor, it can steal items from some enemies.
Grappling Hook from Phantom Hourglass