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| ||For an overview of this weapon in the Fallout series of games, see Fat Man.|
The Fat Man is perhaps the most devastating infantry weapon ever unleashed upon the modern battlefield - a hand-held catapult that launches portable nuclear bombs.”— VDSG Catalogue No.9716
First entering service in September 2077 with the U.S. Army, the Fat Man is a shoulder mounted mini nuke launcher. The variant appearing in Fallout 4 has a slightly different appearance than in previous games. There is no longer a handle on the right side of the launcher, and instead two straight handles on the bottom. It also appears to be larger, with a rusted silver paint job.
Developers struggled to find a way to fire the heavy ammunition from a man-portable system far enough to keep the operator outside the blast radius, losing a lot of people in the process. Eventually, it was discovered that by placing a small sub-charge into the ammunition itself, similar to bullets being fired from a gun (or perhaps more accurately described as being along the lines of a recoilless launcher), the warheads could be launched a considerable distance without adding too much weight to the already heavy weapon.
When fitted with the MIRV launcher, it fires six mini nukes in a cluster that separate in mid-air, drastically reducing its range, but increasing its overall damage and area of effect.
|Slot||Mod||Description||Weapon prefix||Damage per shot change||Fire rate change||Range change||Accuracy change||Magazine capacity (shots per reload) change||Weight change||Weapon value change in caps||Perk needed||Components||Base ID|
|Launcher||Standard launcher||Standard.||–||–||–||–||–||–||–||–||–||Adhesive x4|
Nuclear material x4
|MIRV launcher||An experimental modification.||Experimental MIRV||-450||–||–||–||–||+5.3||+138||Gun Nut 4|
Nuclear material x6
- Big Boy, a unique version with the Two Shot legendary modification.
- fo4fh The Striker, a unique version that fires modified bowling balls instead of mini nukes.
- fo4nw Nuka-nuke launcher, a unique version that deals 50% more damage than the standard model by firing quantum-enhanced Nuka-nukes.
- ArcJet Systems - Found in the room marked '2' in the Engine core.
- BADTFL regional office - In the evidence locker.
- Boston Airport - Slightly north of Boston Airport, there are wrecked cars. Inside one is a Fat Man. From the Boston Airport fast travel location, head east. The nose section of an airplane will be in front of you. The Fat Man is located in a van on the water's edge behind the nose section.
- Boston mayoral shelter - Beneath the basketball court is an entrance to a cave. The Fat Man lies next to a dead soldier at the end of the cave. There is a nearby deathclaw that will attack on sight.
- Cabot House - In the basement near Edward's bed.
- D.B. Technical High School - At the far end of the old swimming pool in the northwest corner of the lowest level of the school. This is by the raider boss' bed and terminal.
- Federal ration stockpile - In the main stockpile area, just inside the room with two turrets against the wall near the terminal that operates the doors ( the second one). This Fat Man also respawns.
- Fort Hagen - In the armory.
- Goodneighbor - Found behind the desk, beside KL-E-0 in the Kill or Be Killed store.
- Gunners plaza - In a locked utility closet in the southwest corner of the second floor.
- Hub City Auto Wreckers - Carried by a named Gunner, Bridget.
- Lexington - On the walkway where the Raider with the power armor is found.
- Libertalia - Carried by a random raider at the top of the main building.
- Malden center - Found behind a train car hugging against a wall.
- Quincy ruins - being held by Sergeant Baker, who is located on top of the church in the ruins.
- Revere satellite array - Can be found at the top of one of the towers, next to a power armor frame and a case with miscellaneous ammo and other items.
- Robotics Disposal Ground - Found laid on top of a car hood near the back of the scrapyard.
- Salem - On a shelf in a bombed out store across from the chapel.
- Spectacle Island - On the lower level of the beached tugboat containing the generator.
- The Castle - Found in the armory on a shelf, next to it will be a mini nuke.
- The Prydwen - Inside Proctor Teagan's store.
- Zephyr Ridge Camp Far Harbor (add-on) - Carried by a trapper on the tower's top level.
- There is a chance that a mini nuke fired by the Fat Man will be a dud and cause physical damage instead to the target if hit by the dud.
- Technical documentation and holotapes found in Fort Strong reveals the Fat Man's pre-War designation: 'The M42 Fat Man'.
- The Fallout 4 Fat Man appears to have a slightly smaller blast radius than the Fallout 3 version.[verification needed]
- When fired from a long enough distance, the projectile makes a loud whistling noise (similar to the cartoon noise for falling from the sky) which indicates one should get to cover ASAP or sprint away.
- Preston Garvey dislikes using the Fat Man presumably because of its destructive nature.
- When firing with the experimental MIRV modification, there's a chance that it will detonate right at your feet, even if you are firing away from yourself.
- During the first scene of the game, the player can see an advertisement for the Fat Man playing on TV.
Behind the scenesEdit
|The following is based on unverified behind the scenes information and has not been confirmed by canon sources.|
- The Fat Man may have been inspired by the real life M-28/29 "Davy Crockett", which was deployed with American soldiers in the Cold War. The main differences are that the Davy Crockett was fired via tripod, while the Fat Man is shoulder-fired, much smaller/lighter and its mini nukes have a significantly smaller yield than the Crockett's.
- The Fat Man could only exist in its form if it used the Isotope Californium-252, due to its low critical mass, which is the mass necessary to start a nuclear fission reaction. Though it would have been incredibly expensive to mass produce them since a microgram (one millionth of a gram) of Californium 252 costs 10$ and you would need around 2.73 kilograms (5.95 pounds) per mini nuke.
- Additionally, Since the half-life of the 252 isotope is only around 2.64 years, any Mini-Nuke found to have existed from the Pre-War Era would be useless. By the time the Sole Survivor would find them, the isotope in the Mini-Nuke would have it's radioactive mass cut in half around 79 times. After only 20 years of sitting, the Mini-Nuke would have less than 1% of it's explosive potential (Likely not enough to cause a chain-reaction). After 210 years, the mass would be 1.65E-24 percent of it's original value. instead one would have around 2-3 kilograms (Around 6 pounds) of Curium-248, which is far below the 40kg (near 90 pounds) needed for critical mass of that element
|End of information based on unverified behind the scenes information.|
| || |
- ↑ General Brock's terminal in Fort Strong and Private Murnahan's holotape found in Fort Strong refer to the Fat Man as an "M42 nuclear catapult"
- ↑ Ten things we've learned about Fallout 4 - Tech Radar
- ↑ Davy Crockett on Wikipedia.