Deep Iron is a key resource that you will need while playing Skull and Bones, to upgrade a ship called the Frigate which is one of the most powerful in the game. Deep Iron is not easy to find, which makes it a precious item for players who want to improve their fleet. We will outline how to get Deep Iron in two primary methods. The players will obtain Deep Iron either by limiting their weekly purchases from Blackwood, or taking out a high-level Mega Fort with friends in a co-op.
How to Get Deep Iron?
Deep Iron is a rare but valuable resource in Skull and Bones, and is needed to upgrade the large ship called the Frigate. As of now, there are two reliable options to obtain Deep Iron in the game. The first way is by in-game purchases or high-level co-op challenge, making the item somewhat of a task to sort.
Purchasing Deep Iron from Blackwood

The easiest option for acquiring Deep Iron is by buying it outright from Blackwood in Sainte-Anne. When you arrive there, head over and speak with Blackwood. When you open the interaction menu, click on the Buy and Sell tab, and scroll to find Deep Iron. This option can be bought with Guild Marks. The only limitation is that he only has so much of it – you can buy a maximum of ten lots per week.
If you purchased the maximum number of lots, then you won’t be able to buy more until your purchase resets, and when that will happen will be reflected by the cooldown timer. The cooldown timer will include the amount of time to wait until the next “restock” might have something for you to buy. For example, it may say you need to wait two days and fourteen hours before you can buy more.
Earning Deep Iron at Megafort

Another way to obtain Deep Iron is by taking part in a high-level co-op activity. If you open the world map and zoom out, you’ll find a Level 17 Megafort marked on the map. This is a powerful stronghold that requires a group of at least six players working together in co-op mode to defeat.
Successfully taking down this Megafort gives players a chance to earn Deep Iron as part of the loot. While the drop isn’t guaranteed every time, it remains one of the best methods to farm for this rare upgrade material. Given the difficulty and team requirement, it’s recommended to coordinate with other players before attempting to challenge the fort.
These are the two most effective ways currently available to get Deep Iron in Skull and Bones. Whether you choose to purchase it weekly from Blackwood or take on the challenge of a Megafort, gathering enough Deep Iron is essential for upgrading your Frigate and progressing further in the game.