Assassin's Creed Black Flag Resynced Guide | How to Get Ram Ultimate Plan

Here’s a guide on how to get the Ram Ultimate Plan in Assassin's Creed Black Flag Resynced.

Game Guide by Ragib Rawnak on Jul 21, 2026

Upgrading the Jackdaw is one of the best parts of Assassin's Creed Black Flag Resynced, and maxing out your firepower makes naval combat much easier. If you want to smash through enemy hulls and deal massive collision damage, you need the Ram Ultimate Plan.

Here is exactly where to go and how to grab it without getting lost underwater in Assassin's Creed Black Flag Resynced.

Prerequisites for the Ram Ultimate Plan

Before you set sail, you need to make progress in the main story. You cannot get this upgrade plan right at the start of the game.

First, complete Sequence 6, Mission 1. This unlocks the Diving Bell, which lets Edward Kenway explore underwater shipwrecks scattered across the Caribbean.

Diving Bell Location And Coordinates

Unlock the Diving Bell and then get on the Jackdaw and sail to the La Concepcion Wreck. You can find this sunken ship on your map on the following coordinates (150, 270). Sail your ship directly over the wreck marker on your map and stop the ship. Interact with the Diving Bell to dive into the ocean depths in Assassin’s Creed Black Flag Resynced.

Finding The Chest

Navigating underwater shipwrecks can be tricky due to the lack of oxygen and sea hazards, but this particular plan is quick to obtain.

Once you drop into the water at coordinates (150, 270), exit the Diving Bell and look around. The chest you need sits very close to where your bell drops down.

Right next to the Diving Bell, you will see a large swarm of Jellyfish floating beside the hull of a broken shipwreck. Swim straight past the Jellyfish into the opening of the ship structure.

Inside the shipwreck entrance is the treasure chest. Swim straight up to the chest and open it to receive the Ram Ultimate Plan.

After opening the chest, the plan goes directly into your inventory. You can either go to a Harbourmaster or go to the Jackdaw upgrade menu in your captain’s cabin and buy the last ram upgrade in Assassin’s Creed Black Flag Resynced.

FAQ

Q. Can I get the Ram Ultimate Plan before Sequence 6?

A. No. You must acquire the Diving Bell in Sequence 6, Mission 1 to reach the underwater chest at the La Concepcion Wreck.

Q. Do I have to fight the jellyfish to get to the chest?

A. No. You can't fight creatures underwater in the game so you have to swim past the Jellyfish swarm carefully without touching them.

Q. Can I upgrade the ram immediately after finding the plan?

A. If you have already bought the previous ram tiers at a Harbourmaster, and have enough Reales and building materials, the upgrade can be bought immediately.

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