Guide
Assassin’s Creed Black Flag Resynced: How to Get All Ultimate Ship Plans
In this guide, we will tell you how to get all Ultimate Ship Plans in Assassin’s Creed Black Flag Resynced.
The Jackdaw is Edward Kenway’s vessel that you operate throughout the journey in Assassin’s Creed Black Flag Resynced. Although you can upgrade the Jackdaw to enhance its defenses and naval power, making it the strongest vessel is not possible without the Ultimate Ship Plans. The Ultimate Ship Plans work as a resource to upgrade the final tiers of upgrades for the Jackdaw. In this guide, we will tell you how to get all Ultimate Ship Plans in Assassin’s Creed Black Flag Resynced.
What are the Ultimate Ship Plans in AC Black Flag Resynced
The Ultimate Ship Plans are crucial upgrade resources for the Jackdaw. Once you have unlocked the Manor Hideout and fully upgraded the Harbormaster, you will be able to install all upgrades on the Jackdaw. However, the final tier of upgrades for the Jackdaw requires a specific Ultimate Ship Plan alongside Reales and materials. Without the Ultimate Ship Plans, you cannot apply the final upgrades on the Jackdaw.

How to Get All Ultimate Ship Plans in AC Black Flag Resynced
Acquiring the Ultimate Ship Plans for the Jackdaw will require you to hunt for Buried Chests and Shipwrecks across the Caribbean Sea. For the Buried Chests, you have to get the Treasure Map and locate its treasure location. For the Shipwrecks, you have to visit specific Diving Bell locations in the sea and search the chests. Here is how you can get every Ultimate Ship Plan for the Jackdaw in Assassin’s Creed Black Flag Resynced.
All Ultimate Ship Plans Locations
| Ship Plan | How to Get | Upgrade Cost |
|---|---|---|
| Broadside Cannons Number Ultimate Plan | Inside the chest at the Blue Hole shipwreck at the coordinates (440, 145). | 20,000 Reales and 650 Metal |
| Fire Barrel Storage Ultimate Plan | Obtain the Petite Caverne treasure map from the coordinates (862, 237). After that, go to Tulum at the coordinates (40, 372) to loot the buried chest. | 4,000 Reales |
| Fire Barrel Strength Ultimate Plan | Obtain the Santanillas treasure map from the coordinates (191, 218). After that, go to San Juan grotto at the coordinates (455, 462) to loot the buried chest. | 8,000 Reales |
| Harpoon Strength Ultimate Plan | Obtain the Mariguana Island treasure map from the coordinates (847, 462). After that, go to Andreas Island at the coordinates (544, 693) to loot the buried chest. | 4,000 Reales |
| Heavy Shot Storage Ultimate Plan | Obtain the Cayman Sound treasure map from the coordinates (298, 311). After that, go to Petite Caverne at the coordinates (863, 235) to loot the buried chest. | 4,000 Reales |
| Heavy Shot Strength Ultimate Plan | Obtain the Ambergris Key treasure map from the coordinates (28, 159). After that, go to Misteriosa at the coordinates (271, 178) to loot the buried chest. | 25,000 Reales |
| Hull Armor Ultimate Plan | Inside the chest at San Ignacio shipwreck at the coordinates (348, 745). | 30,000 Reales, 400 Metal, and 750 Wood |
| Mortar Storage Ultimate Plan | Obtain the Tortuga treasure map from the coordinates (851, 352). After that, go to Matanzas at the coordinates (312, 617) to loot the buried chest. | 5,000 Reales |
| Mortars Ultimate Plan | Inside the chest at Antocha Wreck at the coordinates (600, 636). | 25,000 Reales and 650 Metal |
| Ram Ultimate Plan | Inside a chest at La Conception Wreck at the coordinates (150, 271). | 15,000 Reales, 200 Metal, and 600 Wood |
| Round Shot Strength Ultimate Plan | Inside a chest at Kabah Ruins shipwreck at the coordinates (738, 120). | 35,000 Reales |
| Swivel Guns Ultimate Plan | Inside a chest at Devil’s Eye Caverns shipwreck at the coordinates (456, 332). | 15,000 Reales and 400 Metal |
While you are diving at the shipwrecks, focus to see the “white dots” and mark them. These are all the chests. Loot every chest in the shipwrecks.
