Collect the best upgrades to your pirate ship in Assassin’s Creed 4: Black Flag with Game Front’s guide. Each of these upgrade plans are located in a special chest, often in shipwrecks or other hidden locations. Don’t settle for just second-best pirate in the Caribbean. Plunder with ease — find the best upgrades in the list below.
For even more high-seas guides, check out the Assassin’s Creed 4: Black Flag cheats list, with articles on Easter eggs, secrets, and collectible locations. If you’re in need of help finishing the tough missions in the campaign, browse through the AC4: Black Flag video guide.
Elite Ship Upgrade Plans Locations Guide
Elite Round Shot Strength:
- Location: Kabah Ruins
- Map Coordinates: 769, 145
Elite Hull Armor:
- Location: San Ignacio
- Map Coordinates: 379, 770
Elite Swivel Guns:
- Location: Devil’s Eye Cave
- Map Coordinates: 487, 357
Elite Harpoon Strength:
- Requires: Treasure Map – Mariguana Island (880. 544) – Look on the rocks west-of-center.
- Location: Andreas Island – Dig on a tiny island with three palm trees on the very southern edge of the area.
- Map Coordinates: 579, 720
Elite Broadside Cannons Set:
- Location: The Blue Hole
- Map Coordinates: 471, 170
Elite Heavy Shot Storage:
- Requires: Treasure Map – Cayman Sound (327, 334) – Look on the northeastern beach, near a chest.
- Location: Petite Cavern
- Map Coordinates: 901, 263
Elite Heavy Shot Strength:
- Requires: Treasure Map – Ambergris Key (55, 178)
- Location: Misteriosa
- Map Coordinates: 307, 195
Elite Fire Barrel Strength:
- Requires: Treasure Map – Santanillas (217, 250) – Found on the tiny island in the northeast corner.
- Location: San Juan
- Map Coordinates: 479, 487
Elite Fire Barrel Storage:
- Requires: Treasure Map – Kenway’s Fleet Mission – 3 Missions Unlock Treasure Maps, Empty Cellar (Eastern British Colonies), Scarlatina (Eastern Canada), and Great Reputation II (Mediterranean Sea)
- Location: Isla Providencia – Dig on the beach near an old shipwreck in the water, between three palm trees.
- Map Coordinates: 502, 44
Elite Ram:
- Location: La Concepcion Shipwreck
- Map Coordinates: 181, 296
Elite Mortars:
- Location: Antocha
- Map Coordinates: 630, 660
Elite Mortars Storage:
- Requires: Treasure Map – Tortuga (882, 370) – Walk up the east beach to find.
- Location: Matanzas
- Map Coordinates: 333, 650
Achievement / Trophy Unlocked
- Destroyer (40 Points / Bronze):
Fully Upgrade the Jackdaw.