Triforce Chart 1 (B-5) / Triforce Shard 1 (B-4)

The Triforce Shard 1 is found by traveling to the Islet of Steel and finding the Triforce Chart inside.

Head to the Islet of Steel. These waters are swarming with gunboats, so be sure to equip your cannon and be ready to defend yourself. Take them out. They leave behind sunken chests worth 50 Rupees?each.

Sail to the small iron fortress and blow up the ship guarding its entrance. Sail inside (push forward on the analog stick to move while there's no wind) and climb up the stairway.

Stand on the wind symbol and play the Wind's Requiem to make a treasure chest appear. Inside, you will find Triforce Map 1.

Warp to Tingle Island (C-3) and take the map to Tingle and pay him 398 Rupees to translate it.

Next, warp to B-4: Greatfish Isle and use your Triforce Chart to track down the location.

You'll get your hands on the Triforce shard.

Video Walkthrough: Triforce Shard 1