Fortresses are a type of location in Sea of Thieves. They are heavily fortified location armed with a battery of Cannons. They serve as the game's Raid, and thus host to bounties of loot.


Fortresses are very distinct from other islands by the wooden structures that surround the waters. Cannon Towers, and more notably the keep, provide long-range defense against incoming vessels while active.

While inactive Fortresses can also serve as resource dumps where the many barrels of supplies can be looted for your ship including Bananas, Wooden Planks and Cannonballs. A vast number of Gunpowder Barrels are also stored amongst the structures, where they can be either use in combat or taken for profit.

When a Skull Cloud appears over one, that Fortress is active and can be raided, more information can be found here.

List of Fortresses

Name Coordinates Region
Keel Haul Fort C-7 The Shores of Plenty
Hidden Spring Keep K-9 The Shores of Plenty
Sailor's Knot Stronghold F-17 The Shores of Plenty
Kraken Watchtower O-6 The Wilds
Shark Fin Camp U-5 The Wilds
Skull Keep U-11 The Wilds
Old Boot Fort P-17 The Ancient Isles
Lost Gold Fort J-21 The Ancient Isles
The Crow's Nest Fortress S-22 The Ancient Isles
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