All Ship Ultimate Upgrade Plan Locations

Edward Kenway is a pirate first and foremost, and as such the quality of his ship is paramount - no amount of stealth, swordplay or marksmanship is going to substitute for upgrading the Jackdaw when a hostile man o’ war appears on the horizon. While the base Jackdaw may be able to fend off cutters, sloops and brigs, you’ll eventually start running afoul of more potent ships, and you’ll need to invest in the Jackdaw. To maximize your odds - especially if you care to deal with endgame content like Legendary Ships and the more difficult Forts - you’ll want to seek out the most powerful ship upgrades. This page will provide some info on these upgrades and all their locations in Assassin’s Creed Black Flag Resynced.

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Upgrading the Jackdaw is necessary to survive in the southern Caribbean and challenge the most difficult endgame content!

Upgrading the Jackdaw¶

To upgrade the Jackdaw, you’ll need to visit a harbourmaster at various settlements and purchase them. They tend to cost reales in addition to cloth, metal and wood - resources you can obtain in abundance by plundering other vessels. This is a slow, expensive but necessary process, but in many cases the final upgrade also requires you to obtain an ultimate upgrade plan. A list of every ultimate upgrade plan and their locations can be found on the table below:

All Ultimate Ship Upgrade Plan Locations¶

Ultimate Upgrade Plan Requirements¶

Purchasing the various categories of ship upgrades generally fall into three categories: Upgrades whose upgrade plans are found as buried treasure, upgrades whose upgrade plans that can be found in shipwrecks, and upgrades that do not require and ultimate upgrades that do not require ultimate upgrade plans. Obviously you don’t need to worry about the latter, so we’ll discuss the buried treasures and shipwrecks.

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(1 of 3) Sometimes you’ll have to scour points of interest for treasure maps,

The buried treasure upgrade plans require you to explore the Caribbean thoroughly, land at points of interest, and find the treasure map there. These are listed as “Secrets” when viewing an area, but appear as scrolls when you zoom in. If you can’t find the scroll icon marking these treasure maps, synchronise at viewpoints and explore and they should show up. Once you have the treasure map, go to the location of the ultimate upgrade plan (see the list above) and use the map to find the exact location of the buried treasure. Aside from Kenway mumbling about the buried treasure being close, there aren’t any other markers or indicators to help you until you’re right on top of the treasure, at which point you’ll get a prompt to dig it up. Check out the map links provided to find the location of the buried treasure you seek.

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After you get the Diving Bell, seek out marked dive spots on the map,

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and search these dive spots for submerged treasure, which can sometimes yield ultimate upgrade plans!

Shipwrecks are a bit of a bother - while you can technically explore most of the map after completing the main quest This Old Cove, you must complete the main quest Diving for Medicine before you can get any of the ultimate upgrade plans sunken in chests along with the ship they were on. Once you have the Diving Bell, however, you can search for shipwrecks (a generic term used for what more accurately should be called diving spots) and dive at them. You’ll have to manage your oxygen, using oxygen barrels to recover expended O2 while also dodging sharks, urchins and jellyfish as you search for these chests. Remember that you can hold down to spot these chests as you explore - they’ll appear as glowing white dots… or you can just use the provided map again to pinpoint their locations.

Once you get an ultimate upgrade plan, you’re pretty much done - it’s just a component you need to have on-hand when you purchase the upgrade from a harbourmaster. Just pull it out a chest and you’re golden!