AC4: Black Flag – Elite Ship Upgrade Plans Locations Guide

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.

Source: [1], [2]

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33 Comments on AC4: Black Flag – Elite Ship Upgrade Plans Locations Guide


On November 1, 2013 at 5:56 pm

What about the Mortar cannon Elite upgrade?


On November 1, 2013 at 6:13 pm

dude. I have searched Petite cavern nonstop and I can’t find the plans for Elite Heavy Shot. I’ve eagle-sighted the entire place, searched every chest and the dead body. It’s not in here.


On November 1, 2013 at 11:12 pm

You forgot the elite mortar plans. They’re in the Antocha wreck, (630, 660)


On November 1, 2013 at 11:20 pm

Dont forget guys, you need to get the treasure map before you can find some of these locations. Here is a guid for the maps…


On November 1, 2013 at 11:54 pm

I have already got the plans for the elite heavy shot but I cannot upgrade it


On November 2, 2013 at 4:08 am

The one in petite cavern is the storage…


On November 2, 2013 at 5:34 am

Im having trouble finding the upgrade plan within the San Ignacio wreck


On November 2, 2013 at 8:32 am

Elite Heavy Shot is NOT in Petite Cavern. If anyone knows it’s actual location, please help us out!


On November 2, 2013 at 8:50 am

Just figured out that Elite Heavy Shot STORAGE is in Petite Cavern, not Heavy Shot itself. Still searching for the right place…about 5 different sites are using this exact list, so we really need to update it. Please help!

Poophead was not here...

On November 2, 2013 at 12:45 pm

The Heavy Shot is located at Ambergris Key (307,195). Serranilla area.


On November 2, 2013 at 12:48 pm

Oops. Got names wrong. Misteriosa is where the plan is at. The Key is where you’ll find the map for it. Sorry.


On November 2, 2013 at 1:12 pm

hey guys the elite heavy shot can be found on misteriosa island (307,195) its at the top of the mayan building but you need a map to find it first which i think the map is at ambergis key in the smugglers hideout


On November 2, 2013 at 1:55 pm


I don’t know where to get the elite heavy shot or el impolutos figure head.
If anyone knows how to get even one of them please tell.


On November 2, 2013 at 3:27 pm

Just as a pointer, the Heavy Shot they’ve mentioned here is actually the Heavy Shot Storage. Still trying to find location of the heavy shot plans themselves.


On November 2, 2013 at 3:38 pm

Yes, just as John and Kris have said the Heavy Shot Upgrade is at Mysteriosa Island (307,195) but in order to dig up the buried treasure here you need to get the map from Ambergris Key (551,178). For the map at Ambergris it should be on the body of a cadaver next to 3 pirates and one of them will have a jamaican accent. Oh and the Heavy Shot listed on this site is actually the Elite Heavy Shot Storage Upgrade. hope this helped.


On November 2, 2013 at 5:53 pm

Elite Mortar Storage?


On November 3, 2013 at 1:42 am

John, elite mortors are the Antocha Wreck 630,660


On November 3, 2013 at 5:55 am

Elite Heavy Shot is acquired by getting the map at Ambergris Key (55,178) and then to Misteriosa (307, 195)


On November 3, 2013 at 11:33 am

Elite heavy shot map can be located through Ambergris Key when diving. The buried treasure is located in Misteriosa on top of the mayan temple

Kevin Thielenhaus

On November 4, 2013 at 7:43 am

Thanks for all the comments!

Updated to include more details for locations, and where to find treasure maps (if required).


On November 4, 2013 at 11:00 am

I’ve already found the map at (Blue Hole) with all seven chest discovered and have 20,000 and enough metal for the elite broadside cannon. But it won’t let me purchase them I currently have the 10 set cannon.


On November 4, 2013 at 2:21 pm

Guys i found it in petite caverns And its on a ledge near a stalking zone of bushes..


On November 4, 2013 at 6:11 pm

The elite fire barrel info is wrong. No clue what the correct info is.


On November 12, 2013 at 11:26 am


can anybody tell me how to unlock the Gibraltar missions in kenways fleet i have been looking ages but cannot find anything in game or on the internet


On November 17, 2013 at 11:54 am

Only used this for one upgrade, elite fire barrel, and it was just way off. No ship wreck, no 3 palm trees, Wtf are you even talking about. If anyone else reads this just know the poster of this is an idiot. How hard is it to look at the map and post coords?!


On November 17, 2013 at 6:46 pm

I got all the ship upgrades but it says I only locked 16/18 plans. What are the other 2 plans?

Kevin Thielenhaus

On November 18, 2013 at 10:12 am


That’s for Elite Fire Barrel STORAGE, Elite Fire Barrel STRENGTH is in another location entirely. The distinction is important.

Kevin Thielenhaus

On November 18, 2013 at 10:17 am

@Jake: There are only 12 Elite plans, the rest of the Jackdaw upgrade are unlocked through other, usually easier, means.


On November 26, 2013 at 9:45 am

Fix the Fire barrel strength coordinates! the right coordinates for Santaillas is 217, 250!


On December 2, 2013 at 6:36 pm

Thank you for helping me.;-)


On December 31, 2013 at 10:03 am

I have found the elite hull armor but I can’t access it in the captins quarters

Nikki lee

On May 5, 2014 at 2:06 pm

I have thever plan and all necessary materials and money but it will not upgrade to elite hull…any suggestions?