The Elite Ship Upgrades from the original game have been renamed in Assassin's Creed Black Flag Resynced. Now called Ultimate Ship Plans, these schematics still serve the same purpose: fully upgrading the Jackdaw. So you'll want to find each and every one of the locations if you're hoping to take on the legendary ships.
When it comes to the Black Flag remake, the aspect that's most interesting to me is what's changed and what's new. Replaying the game yet again all these years later, this time with a fresh lick of paint, I'm astonished by how much it has surprised me on my path to 100% open world completion. Something I thought I knew like the back of my hand is new again.
All Black Flag Resynced Ultimate Ship Plan locations
There are 12 Ultimate Ship Plans for you to find, locked behind either dives or treasure maps. You'll need to complete the first Sequence 6 main mission, Diving for Medicine, before you can start hunting for the plan locations in earnest, since this unlocks the diving bell, and most of the plans are located underwater.
Once you've found the plan, you then need to head to any shipmaster to purchase the upgrades for your ship—they're not free, unfortunately, costing both Reales and materials.
Here's where to find all 12 Ultimate Ship Plans in the remake:
Ultimate Ship Plan | Location |
|---|---|
Round Shot Strength | Kabah Ruins (738,120) diving bell, Navassa: In the cave at the north point of the dive map, through the tunnels. You'll have to wait for the current passing through to get by, sheltering in the cave off to the right, before swimming on. There are air pockets in the ceiling of any room with oxygen streams. |
Heavy Shot Strength | Misteriosa treasure map: Collect the map from Ambergris Key, southern Chinchorro (28,160), and the chest from Misteriosa, central Serranilla (271,178). |
Fire Barrel Strength | San Juan treasure map: Collect the map from Santanillas, Chinchorro (191,218), and the chest from San Juan smuggler's cove in Cruz (455,462). |
Mortar Strength | Antocha Wreck (601,633) diving bell, Gibara: In a chest in the open wreck at the southernmost point of the area on the map. |
Swivel Guns Strength | Devil's Eye Cavern (453,331) diving bell, Cruz: Head north through the tunnels and follow them around until you reach the open-air cave you can walk around. On the left side, down a tunnel, you'll find the chest. |
Broadside Cannons Number | The Blue Hole (440,145) diving bell, Charlotte: At the far north end of the dive, at ground level, in a bit of a broken-open wreck. |
Ram | La Concepción Wreck (150,271) diving bell, Chinchorro: In the broken bit of ship directly north of the diving bell, very close to where you first enter. |
Hull Armor | San Ignacio Wreck dive, Dry Tortuga, during the Diving for Medicine main mission: After you get propelled through the caves by currents and enter the section with the sharks, head towards the diving bell, but then turn left to find a ship with a hole in the side containing a big chest. |
Heavy Shot Storage | Petite Caverne treasure map: Collect the map from Cayman Sound, southern Castillo de Jagua (298,311), and the chest from Petite Caverne smuggler's cove in southern Punta Guarico (863,235). |
Fire Barrel Storage | Tulum treasure map: Collect the map from Petite Caverne in southern Punta Guarico (862,237), and the chest from Tulum, southern Conttoyor (40,372). |
Mortar Storage | Matanzas treasure map: Collect the map from Tortuga in northern Punta Guardico (851,352), and the chest inside Jiquey smuggler's cove, western Gibara (534,510). |
Harpoon Strength | Andreas Island treasure map: Collect the map from Mariguana Island in central Gibara (848,514), and the chest from Andreas Island, Eleuthera (544,693). |
