AC4 Elite Design Plan Locations Guide
Sebastian Wright
Published Apr 13, 2026
Elite Design Plans are the highest level upgrade for your Jackdaw. In order to acquire all plans, you should visit many Caribbean Islands, as well as complete the story mission “Diving for Medicines“.'; document.getElementById("serge_648ac998c20ba86b43957c42").style.display = "block";
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This mission rewards you with Diving Bell upgrade, which helps you reach the bottom of the ocean.
While traveling throughout the global map and discovering new places, you will come across cadavers with hidden treasure maps. The maps will help you find locations of Ship Wrecks, which can reward you with money and elite design plans. A complete list of Elite Design Plans and their respective Ship Wrecks is posted below the text.
Weapons and Armor Elite Design Plans
1. Elite Hull Armor (Ship Wreck)
Plan Location: San Ignacio Wreck (379,770)2. Elite Set of Broadside Cannons (Ship Wreck)
Plan Location: The Blue Hole (471,170)3. Elite Ram (Ship Wreck)
Plan Location: La Concepcion Wreck (181,296)4. Elite Round Shot Strength (Ship Wreck)
Plan Location: Kabah Ruins (769,145)5. Elite Mortars (Ship Wreck)
Plan Location: Antocha Wreck (630,660)6. Elite Swivel Guns Strength (Ship Wreck)
Plan Location: Devil’s Eye Caverns (487,357)7. Elite Heavy Shot Strength (Treasure Map)
- Corozal – Tavern (36,265)
- Cadaver Location: Ambergris Key Cave (58,184)
- Additional Reward: 3 000R
- Dig Location: Misteriosa (307,195)
8. Elite Fire Barrel Strength (Treasure Map)
- Arroyos – Tavern (193,565)
- Cadaver Location: Santanillas (221,247)
- Additional Reward: 3 000R
- Dig Location: San Juan (479,487)
Storage Elite Plans
1. Elite Heavy Shot Storage (Treasure Map)
- Cadaver Location: Cayman Sound (335,335)
- Additional Reward: 3 000R
- Dig Location: Petite Caverne (894,260)
2. Elite Mortar Storage (Treasure Map)
- Cadaver Location: Tortuga (882,377)
- Additional Reward: 3 000R
- Dig Location: Matanzas (342,641)
3. Elite Fire Barrel Storage (Treasure Map)
- Cadaver Location: Kenway’s fleet acquires it after completing mission “Scarlatina”.
- Dig Location: Isla Providencia (502,44)
Harpooning Elite Plan
1. Elite Harpoon Strength (Treasure Map)
- Cadaver Location: Mariguana Island (878,539)
- Additional Reward: 3 000R
- Dig Location: Andreas Island (575,717)
