Uploaded July 2026 | Updated September 2026, 2 weeks ago

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This guide will show you where to find all 68 Treasure Chests in Underwater Shipwrecks in Assassin's Creed Black Flag Resynced. Opening them all will get you the "Seven Deadly Seas" trophy.

You must first finish the "Dving For Medicines" story mission to unlock the Diving Bell.

Timestamps:
Note 00:00
San Ignacio Wreck (8 Chests) 00:10
Antocha Wreck (8 Chests) 04:10
Kabah Ruins (12 Chests) 08:10
The Blue Hole (11 Chests) 16:04
Devil's Eye Caverns (11 Chests) 22:19
La Conception Wreck (10 Chests) 28:16
The Black Trench (8 Chests) 32:32
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