Head to the hidden treasure marker southeast of Tor Gvalch'ca where, along the coast, you'll find a wrecked ship with a body. Loot it for the traveler's notes and read it to reveal the next location is almost exactly north, on the southern tip of the Tor Gvalch'ca island.
Swim out here but be prepared for a couple sirens near the treasure chest. Once they're killed, dive down in the search area to find the chest and complete the quest.
Journal entry Edit
- Geralt found a document which grabbed his attention...
I swear, not in my whole life have I ever seen such waves. Ten, twelve, fourteen feet! And the wind - why, it shook the mast and battered the sails so they were near about to fly off. Rocks everywhere, currents treacherous... Helmsman said we'd pull through, that he'd seen worse and come out all right. Me, I'm not so sure. If the storm don't calm down soon, this tub's going to break in two.
- Though the water was exceptionally cold, Geralt dived down and fished the valuable cargo out of the wreck.
- Read the document you found.
- Find the sunken cargo using your Witcher Senses.