Design plans | Underwater locations AC IV: Black Flag Guide

Last update: 02 February 2017

Black Trench

There are two chests to the south of this location. In the second one, the Southern one, there is a design plan of flower sail.

Blue Hole

The chest with the design plan is in the North-Eastern part of the location. There is no other there so, you cannot mistake it for any other. Inside, there is a design plan for the elite cannons.

Devils' Eye Caves

The design plan is in the North-Western part of the location, where there are three chests and two air bubbles. The design plan on the rightmost of the three chests. You will be able to tell it by the fact that it is in the only dry spot in the cave. Inside, there is a design plan for elite swivel guns.

Kabah Ruins

The chest with the design plan is in the Eastern part of the location, in the ruins. After you regain control over Edward, look right. You should notice a flooded Aztec building. Inside, there is a chest with the design plan for the elite cannonballs.

Atocha Wreck

The chest with the design plan is in the Eastern part of the location. It is the Eastmost chest, at the very end of the wreckage. Inside, there is a design plan for the Elite mortar.

La Concepcion Wreck

In the Southern part of the location, at the bottom of the wreck, there are three chests. They have been arranged into a triangle. The design plan is in the one on the right. Inside, you will find the design plan for the elite ram.

San Ignacio Wreck

The chest is in the North-Western part of the location, right next to the Animus Fragment. It is the most forwarded chest in that direction so, you can easily tell it. Inside, there is a design plan for the elite hull.