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You visit this fine vessel in trying times. Becalmed these long years on her airy perch. Damn you Weatherby Savings & Loan! I spit at you!

Ironsides is a sentry bot and the captain of the USS Constitution in 2287.


Ironsides believes he is a colonial era Naval captain,[1] while the terminal on the ship's deck indicates that he was designed to entertain tourists on the USS Constitution.[2] Additionally, an entry in 2055, before the bombs dropped in 2077, indicated that something was overheating and leading to data corruption and although the terminal entry is vague, it is not unlikely that it was the robot's fault, as sentry bots are known for overheating.[3] This all alludes to the fact that Ironsides' programming has run amok in the years since his human caretakers died, and as a result he has assumed complete control over the ship, having reprogrammed a variety of robots to serve as his crew. Despite his bizarre mannerisms and choice of hat, Ironsides is fully aware of his surroundings and knows full well that the U.S. Military no longer exists. He is attempting to repair and operate a rocket thrust system and he is in search for assistance.

He also believes that since the U.S. Military no longer exists, and as he is the only military robot having "evolved" past his programming (as far as he is aware), he is now the highest ranking member of the armed forces and therefore is now in charge of the entire U.S. Military. As his first priority, Ironsides has decided to mount a retaliatory strike on China.

Ironsides has developed a large degree of mercy and prefers to avoid killing others whenever possible.[4] Despite the 17 times in which the USS Constitution has been attacked, Ironsides believes that violence should only be resorted to when there is no other option, and, in spite of Mr. Navigator's requests, refused several times to plan a counterattack.[5]

Interactions with the player character

Interactions overview

FO76 ui icon quest.png
This character is involved in quests.


Apparel Weapon Other items On death
Captain Ironsides' hat 1-20 fusion cells
1-20 steel
Power relay coil


  • Ironsides is unable to be hacked by players with the Robotics Expert 3 perk, making him unavailable as a companion using that method.
  • Despite Ironsides believing himself to be an American captain, he uses the British pronunciation of the word Lieutenant, so that it comes out as "Lef-tenant."


Ironsides appears only in Fallout 4.

Behind the scenes

His name is a reference to the USS Constitution's nickname "Old Ironsides," given to the ship because she was said to be so sturdily constructed that "cannon balls just bounced right off her". She is the oldest commissioned warship currently afloat (HMS Victory is older, but is laid up in drydock). The ship has been well-preserved and fully restored, and currently serves as a museum and tour site in the Boston area.


  1. Ironsides: "I am Captain Ironsides, commander of the USS Constitution. You visit this fine vessel in trying times. Becalmed these long years on her airy perch. Damn you Weatherby Savings and Loan! I spit at you!"
    (Ironsides' dialogue)
  2. USS Constitution terminal entries; Ship's Purser, Access Tourist Information
  3. USS Constitution terminal entries; Ship's Purser, > View Upgrade Logs, > v1.0
  4. Ironsides: "Despite ample provocation, I had hoped the guidance chip could be recovered without violence to the scavengers. Even now they plot their retaliation."
    (Ironsides' dialogue)
  5. The Sole Survivor: "Why did the scavengers attack?"
    Mr. Navigator: "Scavengers have attacked ship 17 times. Destroyed 13% of ship's systems. Stole 5% of ship's store. Logic error. Captain's orders authorize scavenger termination only if necessary to preserve the ship"
    (Mr. Navigator's dialogue)