The ultimate ship upgrades for Black Flag Resynced allow the Jackdaw to reach the final tier of every kind of weapon, armor or storage, but the ultimate plans needed to access them are scattered all over and very few of them come easily. However, I've found every ultimate ship upgrade plan in the Assassin's Creed Black Flag Remake, and laid out all their locations so you can make your ship as deadly as possible - though keep in mind you can't install these upgrades until you upgrade the Harbormaster at Great Inagua to its highest level.
For posterity and those enjoying the original 2013 Black Flag, we've also kept our original full set of guides on how to get all the Elite ship plans in that game (the same thing with a different name).
Exploring more in Black Flag and want to be the best pirate you can be? Check out where to get all the Black Flag Resynced Mayan Stones, or unlock all your ship's abilities by finding the different Black Flag Resynced Officers!
How to get all Ultimate Ship Upgrade plans in Black Flag Resynced
There's a total of 12 Ultimate Ship plans for upgrades in Black Flag Resynced, spread around various side activities. All of them are laid out below, so you know where to get them.
Upgrade Plan | Activity | Plan Coordinates | Details |
|---|---|---|---|
Round Shot Strength Ultimate Plan | Diving Bell (Kabah Ruins) | 738, 120 | Go through the Northern tunnel of water currents to the very end to reach this upgrade in a treasure chest. |
Heavy Shot Strength Ultimate Plan | Buried Treasure | 271, 178 | Acquire the treasure map on Ambergris Key (28, 160) and go to Misteriosa (271, 178) to dig it up. |
Fire Barrel Strength Ultimate Plan | Buried Treasure | 455, 462 | Acquire the treasure map on Santanillas (191, 218) and go to San Juan (455, 462) to dig it up. |
Mortar Strength Ultimate Plan | Diving Bell (Antocha Wreck) | 600, 636 | Found in the Southernmost chest in the area. |
Swivel Guns Ultimate Plan | Diving Bell (Devil's Eye Caverns) | 456, 332 | At the halfway point through the tunnel network, swim up to the air pocket and climb out to find this chest. |
Broadside Cannons Number Ultimate Plan | Diving Bell (Blue Hole) | 437, 145 | Go to the most Northern point a dead-end tunnel holds a chest. |
Ram Ultimate Plan | Diving Bell (La Concepcion Wreck) | 147, 272 | Found in the Northernmost part of the sunken shipwreck. |
Hull Armor Ultimate Plan | Diving Bell (San Ignacio Wreck) | 348, 745 | Found in a chest in the far Northeast corner of the area. |
Heavy Shot Storage Ultimate Plan | Buried Treasure | 863, 235 | Acquire the treasure map on Cayman Sound (298, 311) and go to Petite Caverne (863, 235) to dig it up. |
Fire Barrel Storage Ultimate Plan | Buried Treasure | 40, 372 | Acquire the treasure map in Petite Caverne (862, 237) and go to the beach on Tulum (40, 372) to dig it up. |
Mortar Storage Ultimate Plan | Buried Treasure | 312, 617 | Acquire the treasure map on Tortuga (851, 352) and go behind the waterfall on Matanzas (312, 617) to dig it up. |
Harpoon Strength Ultimate Plan | Buried Treasure | 544, 693 | Acquire the treasure map on Tortuga (851, 352) and go behind the waterfall on Matanzas (312, 617) to dig it up. |
Oddly enough in Assassin's Creed Black Flag Resynced, elements like the Rowboat armor and the front-facing weapons are the only Jackdaw features that don't need Ultimate plans for their final upgrade tier. Still, all the others above are necessary, especially if you want to fully enhance the Jackdaw for the purposes of taking on endgame threats like the Legendary Ships.
All Elite Ship Upgrade plans in Assassin's Creed Black Flag (2013)
There are 12 elite ship upgrades in the original Assassin's Creed 4: Black Flag, listed below.
- Elite Heavy Shot
- Elite Hull Armor
- Elite Round Shot Strength
- Elite Mortars
- Elite Swivel Guns
- Elite Fire Barrels
- Elite Heavy Shot Storage
- Elite Broadside Cannons
- Elite Mortar Storage
- Elite Fire Barrel Storage
- Elite Harpoon
- Elite Ram
Getting all of them will obviously transform the jackdaw so let's take a look below on where you can get them all.
Elite Heavy Shot location
Coordinates – 307,195, Misteriosa Island
You’ll need the diving bell to reach the map at Ambergris Key, which is on the second floor of the structure. The Heavy Shot upgrade itself is on the highest structure on Misteriosa Island. Climb to the top and look to the left of the water fountain.
Elite Hull Armor
Coordinates – 379,770, San Ignacio
Look for a wreck near some bright green seaweed. There’s a lot of sharks here but at least the wreck is fairly open meaning you don’t have to worry about getting in. If you haven’t already collected it you should see a bright animus fragment as you approach. Collect that then hang a left to find the chest and the plans.
Elite Round Shot Strength
Coordinates – 769,145, Kabah Ruins
You'll need the diving bell here and as soon as you leave you should see a wreck with some ruins to the right. Head to the front of the structure and you should find a door. The chest will be inside on the lower floor at the back. There’s a shark but if you’re quick it shouldn’t give you too much trouble.
Elite Mortars
Coordinates - 630,660, Antocha
You’ll need some nerves here as, not only is there a shark to worry about, you’ll have to swim quite deep into the wreck. Look out for the weeds to avoid the shark and then head around to the hull break on the right (if you’re approaching from the stern). Swim inside and follow the passage around until you reach the cannon deck. Look out for a skeleton chained to the wall to on the right to locate the chest.
Elite Swivel Guns
Coordinates – 488,353, Devil’s Eye Caverns
Once in the Devil’s Eye Caverns look for that ‘V’ in the rocks and follow the tunnel you find underneath around to the left. If it’s full of jellyfish you’re going the right way. Stick to the left and you should eventually come into a small cavern with two chests. The one on the left has the Elite Swivel Gun plans.
Elite Fire Barrels
Coordinate – 479,487, San Juan
The map for this is found at the Northeast corner of Santanillas. You’ll then need the diving bell to locate the Fire Barrel plans in the Smuggler’s Den. Look for some broken planks on the wall to find where you need to dig.
Elite Heavy Shot Storage
Coordinates – 901,263, Petite Cavern
This map will be found at Cayman Sound. Head to the upper right side of the islands outer edge and look for some rocks embedded near some trees. The treasure and designs themselves are located at Petite Cavern near some rocks behind the campfire. Walk down the sloped ramp and keep going past the fire to find where you have to dig.
Elite Broadside Cannons
Coordinates – 471,170, The Blue Hole
Take the diving bell down at the coordinates and look for a huge face. Swim past it and go straight down. Look for a rectangle on the sea bed which is the side of the wreck. Go over the top and around the back to find the chest on the sea floor.
Elite Mortar Storage
Coordinates – 333,650, Mantanzas
The treasure map leading to the Elite Mortar Storage can be found on a corpse along the North East edge of Tortuga beach. At Mantanzas head through the village and look for some ruins where you’ll find the treasure under this recess.
Elite Fire Barrel Storage
Coordinates – 502,44, Isla Providencia
The treasure map is found as part of the Scarlatina mission. While the actual plans are found on the Southern coast of Isla Providencia. Look out for a wrecked ship but don’t worry, this is on dry land. You’ll find the design plans by digging in among these three trees.
Elite Harpoon
Coordinates – 579,720, Andreas Island
You’ll find the map for the top harpoon upgrade just to the left of the centre of Mariguana Island. To find the design plans themselves head out to the coordinates and look for this little circular island just off the coast with three trees. Dig just in front of the two trees growing together.
Elite Ram
Coordinates – 181,296, La Concepcion Shipwreck
More sharks, so you’ll need to use the weeds to stay un-eaten once you’ve used the diving bell to get down there. At least this one is easy to recover. Look for the main mast and you should find the chest in a small alcove behind it.
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