Can One Man Keep a Yacht Alive Through Four Rounds of Attacks?
MrBeast ミスタービースト
The premise of this MrBeast challenge is simple: Sean is handed a yacht and told it is officially his, with one catch. MrBeast promises to "do everything in my power to destroy it," and Sean has to protect it from attacks that include 100 cannonballs, massive explosives, and more. Before each of four phases, Sean gets 24 hours to build defenses. If the yacht fails, the video threatens to start over with a new contestant. The question running through the video is whether improvised barriers, built on a boat sitting in a lake, can actually stop escalating attacks, and how much Sean's approach improves as he goes.
Phase One: An Angled Wall Against 100 Cannon Shots
Sean immediately bought supplies on MrBeast's credit card and started on the first defense, aimed at phase one: 100 cannon shots. His stated plan was to "build a giant wall angled to hopefully block the cannon fire." He worked through the night and into the next morning until the full 24 hours ran out.
The wall did not hold up the way he hoped. Once firing began, the onlookers watched the cannonballs go "right through" and rip through the storage containers that made up the barrier. The narration says the cannons were "melting through his defense like butter." Sean called himself "toast" and said the cannons were far more powerful than he had expected. The barrage lasted what MrBeast called "a torturous three hours."
The result was mixed. The yacht survived and stayed afloat, but three of the hundred cannonballs reached it. One left a small hole and hit a rail, and another hit the boat directly. The worst damage was inside: the yacht's bathroom was described as completely destroyed, including a smashed mirror. Sean was satisfied with three hits out of a hundred, calling it "pretty good." MrBeast pushed back, telling him he needed to take phase two more seriously, and later called the phase-one build "pathetic" because it let multiple cannonballs through.
Phase Two: Mattresses Against 15 Sea Bombs
To show he was serious, MrBeast revealed phase two: in 24 hours, 15 sea bombs would explode in a circle around the yacht. He said the team had tested them before the video and that they were "extremely powerful."
Sean slept briefly on the yacht, surrounded by the bombs, and started work the next morning. A severe thunderstorm meant he could not use his crane, so everything that day had to be done by hand. His big idea was mattresses. His workers bought every mattress in town, and the crew ferried them out to the boat and covered it "all the way around, every inch." By the end, MrBeast said he could no longer tell it was a yacht. Sean also added water jugs.
Two hours before the detonation, MrBeast said Sean hadn't done as much as he expected. Sean pointed out how much easier the work would be with the crane. MrBeast pointed out how much easier it would be if the boat weren't in the water. At the deadline, MrBeast called the result possibly "the most hideous thing I've ever seen" and said he did not think it would work. Sean asked for MrBeast's hat as a prize, and MrBeast agreed to hand it over if the yacht survived.
The explosion looked devastating, and someone said there was "no way that didn't do damage." On inspection, though, the yacht was still standing and looked fine. The blasts had only burned the mattresses. The narration concludes that "somehow" the mattresses were a very effective defense against the mines.
Phase Three: Fireworks, Flaming Arrows, and Catapults
Phase three came in three levels. First would be "a million fireworks" fired straight at the yacht, then a barrage of flaming arrows from a higher level, and finally catapults (also called trebuchets) launching "flaming death balls" from the sky.
The narration says Sean's building had become efficient by this point. He told his crew to move shipping containers into place and rested while they worked. His plan was to use more shipping containers to build a giant wall, hoping it would be tall enough to stop fireworks and burning catapult debris from reaching the yacht. He also pumped lake water through sprinklers to soak the mattresses still on the boat. MrBeast was impressed. He described the result as a 40-foot-tall solid wall and said that, compared with the earlier builds, this one might actually work. Sean was openly confident and turned down extra build time, saying the yacht was covered, the wall was built, and everything behind it was wet.
The attack only partly failed. The fireworks produced a spectacle the onlookers said "doesn't look real," and some hit the top of the yacht, with smoke visible on board. The thousand flaming arrows went right over the wall. Next came the catapults, which flung what MrBeast called balloons on fire, a nod to the sponsor, though he admitted they were "basically flaming bowling balls." Early shots hit the shipping container right next to the yacht. As shots kept landing, the onlookers said the defenses were falling and the boat was exposed. The final catapult shot was a direct hit, but the soaked defenses held. Sean joked that "the only thing burned today is me."
Phase Four: Machine Guns on Top of Everything Else
MrBeast announced that the final phase would be a barrage of machine guns, plus every earlier attack combined: the fireworks, catapults, arrows, and another 100 cannonballs. In place of the scattered sea bombs, there would be a single giant mine, which MrBeast described in exaggerated terms as a "borderline nuclear missile" and "island flattening sea mine."
Sean's plan was to put "a ton of stuff" between the yacht and the incoming attacks:
- leftover crates to plug any cracks bullets might get through
- a mound of dirt in front of the wall, as an impact barrier where the cannons would hit
- water-filled barrels to close off the back, since the giant bomb could come from behind
By the deadline, MrBeast listed multiple layers of metal shields against the machine guns, the sand mound and other material against the cannons, the tall wall against projectiles, and the soaked mattresses.
Sean also reflected on the strain of the challenge. He said he was away from home and missing his family, and that the water made everything harder because "you can't just walk out to the boat and put stuff on it." He said the bomb made him nervous. MrBeast said that even though his job was to destroy the yacht, he genuinely hoped Sean would win. Sean said he had wanted a boat like this since he was a little kid. MrBeast noted that 100 hours earlier there had been "just a boat," and now there was all of this.
The Final Assault
The machine guns opened fire first. The onlookers said shooters were "actually aiming through the cracks," and someone thought they saw a round get into the boat. One shooter also accidentally hit the fireworks and set them off. MrBeast told Sean honestly that he did not think the yacht would make it.
The cannons fired next. One cannonball hit the yacht, but according to the narration the crate and the dirt mound stopped the rest of the impact. The catapult defense worked well enough that Sean caught one of the burning balls: it landed inside a shipping container.
Saying that at this pace it would take all night, MrBeast ordered cannons, fireworks, arrows, and catapults launched at the same time. The smoke grew so thick that no one could see, and someone compared it to "World War III." Sean asked how much more it would take.
MrBeast saved the biggest attack for last. The team combined the sea bombs from earlier into one mega sea bomb. Here he said 14, after earlier saying the giant mine was equivalent to all 15. It was sent toward the yacht on an RC boat and set off a huge explosion.
The Outcome
Despite everything, the yacht was still floating. Sean said that although he had done a lot of weird things, he had never experienced anything like this, and he added that nobody said the yacht "had to be pretty." MrBeast acknowledged that some stray bullets and cannonballs had gotten through. He gave Sean $50,000 so he could repair the yacht.
The video ends with MrBeast asking for the yacht's name. Sean begins to answer, but the name is cut off in the transcript. MrBeast then notes that the team made sure the lake was completely cleaned up afterward.
This is officially your yacht. Congrats, man. The only catch is I'm going to do everything in my power to destroy it. And it's up to you to protect it from attacks like 100 cannonballs, massive explosives, and so much more.
You got to be kidding me.
And you have exactly 24 hours from now to build your defenses for the yacht. Time has started. Good luck.
All right, dude. Let's see if this yacht sinks.
Sean, using my credit card, immediately bought a bunch of supplies and began building his defense against phase one, 100 cannon shots.
Run me through your plan.
My plan is to build a giant wall angled to hopefully block the cannon fire.
And after working all throughout the night, into the next morning and all the way through a complete 24 hours, Sean was going to have to call it.
Because the time is up. Let's go shoot some cannons.
Will his defense protect his new yacht from a hundred cannonballs or will we start this video over with a new contestant? Phase one of four has begun.
I'm nervous. All right, Sean. We're about to fire the cannons at your new yacht.
Terrifying.
Aim the cannon. Fire.
That's just going right through. Dude, it is ripping through those storage containers.
The cannons were melting through his defense like butter.
I'm toast, man.
I feel like I lost a little piece of my soul.
And probably a piece of your yacht.
The cannons were already damaging Sean's yacht, and we're just getting started.
These cannons are tearing me up. She's a goner. I guarantee it just went straight through.
We kept firing cannon after cannon, ripping through Sean's defense.
These cannons were way more hardcore than I thought they were.
After a torturous three hours.
Go, go, go. Let's go see this thing.
Somehow.
God, I hope my yacht isn't shredded.
Sean's yacht actually survived.
You have a tiny hole and it hit a rail.
Dude. Bro, a cannonball hit right here.
But that was only the least of the damage.
No.
The bathroom in Sean's yacht was completely destroyed.
Look at that mirror right there. Three cannonballs hit your yacht and you nearly survived phase one.
I'll take it. Three out of a hundred. It's pretty good.
No, I need you to take phase two more seriously.
Okay.
And if you don't think I'm being serious, I'll just show you. Bring out the bomb.
In 24 hours, those 15 sea bombs will explode around your yacht.
Oh, no.
And by the way, we tested these things before the video. They are extremely powerful.
15 big booms in a circle around this thing. How am I going to protect this? I'm gonna go hit the hay in a yacht surrounded by bombs. Come back fresh in a couple of hours.
Sean got up the next morning and immediately got to work, but because of the severe thunderstorm, he couldn't use his crane.
This is brutal. We're doing everything today by hand.
How are you going to pad up the yacht?
Mattresses.
That's right. Sean's big plan is mattresses, and his workers bought every mattress in town.
All of those mattresses. We'll start ferrying them back and forth. There we go. All the way around, every inch.
I can't even tell this is a yacht anymore. It just looks like a bunch of mattresses. In two hours, we blow up the mines and he hasn't really done as much as I thought.
These are heavy. You know how much easier this would be with the crane?
You know how much easier this would be if it wasn't in water?
Yes.
Clock's ticking. This is not looking good. I don't think his yacht's going to survive. Three, two, one. Time's up.
That's all I'm going to get.
So he has some mattresses and water jugs. Karl, can you cover his ears? This might be the most hideous thing I've ever seen.
What I'm getting from you is you don't think this is going to work?
Yeah. Yeah? Yeah.
Let's see if the yacht sinks. Any last words?
Can I have the hat?
I will give you my hat if your yacht survives.
All right.
Three, two, one. Blow it up.
No!
Oh my gosh. There's no way that didn't do damage. It is over.
Come on. Let's go check it out. My yacht.
It looks good. She's still standing. You did it. It just burned the mattresses. That's right.
I'm not sure what to say.
Somehow, these mattresses were actually a very effective defense against the mines.
In front of us is phase three. This attack consists of three different levels. We're going to be launching a million fireworks straight at your yacht, followed by a barrage of flaming arrows, a level higher, and finally catapults launching flaming death balls from the sky.
And by now, Sean's build strategies were getting pretty efficient. He gave his crew orders.
Let's go ahead and get those containers moved into place for phase three.
Then got some much needed rest while they worked.
Now it's on to trebuchets, fireworks and flaming arrows. What is your plan?
My plan is to get more shipping containers and build a giant wall. And I'm just hoping that that wall will be tall enough to block the fireworks and the flaming catapult debris from hitting the yacht.
That's so sketch. This whole thing is so sketch.
Today is my day. I'm feeling it. I'm hard... Hard confidence now.
Okay.
Compared to phase two, this is insane. You really stepped it up.
Yeah, man.
You went from a pathetic build that let multiple cannonballs through to this, which I actually think might work.
He is currently taking lake water, flushing it through sprinklers to wet his mattresses. All right, we're about to go inspect his defenses.
Is now a bad time to tell you guys I'm afraid of heights?
This is a 40-foot-tall, solid wall. When we fling the catapults, they're going to fly over the shipping containers where I'm at and hopefully hit his yacht. Right?
No, you're going to miss.
Hey, Chandler, envision you're a catapult with giant flaming balls.
I got you. Ready? Aim. Fire.
That's the one. Dead hit. Your boat's going down.
Not going to happen.
All right, so why are you so confident? You have 30 seconds where you can be building and you're doing nothing.
We're ready. It's covered up. I built the wall. Everything's wet back there. Do we even need to wait 20 seconds? No, let it rip. Let's do it.
Time's up. Phase three is upon us. Catapults, flaming arrows and a million fireworks. Let's see if this yacht lights on fire. Ready the fireworks.
Any last words? Good luck. Fire the fireworks.
Oh, my God. That doesn't look real, bro. That is wild. Oh my gosh. How is this doing that?
While these pretty fireworks are going off, I'm going to tell you about Bloons Tower Defense 6. Bloons Tower Defense is a game I've actually been playing since I was a teenager.
Oh my God! There are so many.
No joke. I used to literally play this in English class when I was 15.
Dude, I see smoke on his yacht.
And they're back with their sixth installment of the game. Bloons Tower Defense 6.
Oh, my God. How is this doing that?
And if you've never played Bloons Tower Defense, basically you defend yourself against the Bloons by placing monkey towers and heroes on the map.
I want to celebrate something right now. Oh my goodness, bro. It's hitting his yacht. Oh, yeah. It is hitting the top of his yacht. That firework just hit his yacht.
Blow up the arrows. Now, it's time for a thousand flaming arrows.
Oh my God. The arrows are going right over his wall. Wow. Yeah! I wouldn't cheer yet.
Ready the catapults. Ready? And because of the sponsor, the next thing we're flinging are balloons... on fire. Here we go. Basically, flaming bowling balls. Fire in the hole.
There goes. That's going straight for his yacht. They hit the shipping container right by his yacht. Let's go, baby.
If you buy anything in-game, use MrBeast in the support a creator code, if you want to support me and help me do more videos like this. Make sure you download Bloons Tower Defense 6. And if you download it right now, you can get a MrBeast pack for free.
Oh my God! Dude, his boat is exposed. Sean, I'm feeling worried for you right now, bro.
I'm still feeling good. I think I'm good.
This is a heavy balloon. Dude, this looks nothing like a balloon. You just don't look good enough balloons.
The defenses are falling. Let it rip. And if just one of these catapult shots lands on Sean's yacht, this whole video might be over.
That was a little closer than I thought it was going to be. Fire the final catapult. Oh, that's a direct hit. Water.
The only thing burned today is me, boys.
All right. You know what? Sean, you might be laughing now, but you are not ready for this final phase. In 24 hours from now, we will be attacking your yacht with a barrage of machine guns. Any questions about phase four?
In addition to every single phase so far in this video combined: the fireworks, the catapults, the arrows, the 100 cannons.
You have 100 more cannonballs?
And rather than a bunch of bombs, this giant monstrosity, borderline nuclear missile, questionably even illegal, island-flattening sea mine.
All of that on top of machine guns? Yeah.
Today is phase four of the challenge. The general plan is to just put a ton of stuff between my yacht and the upcoming attacks. We're going to use the remaining crates to try to block any cracks the bullets might get through. That container is just perfectly placed for this outside purge.
Use as much dirt as we can to create an impact barrier right in front of the wall where the cannons are going to shoot. And since the giant bomb can be sent from behind, I'm just going to do what I can with the time remaining and close the back with water-filled barrels.
This challenge is tough. I'm away from home. I'm missing the family, and the water element makes everything so difficult because you can't just walk out to the boat and put stuff on it. It's made it so difficult. That bomb has me nervous.
He has multiple layers of metal shields for the machine guns, a mound of sand and a bunch of other stuff to stop the cannons. He still has the tall wall for the projectiles and the soaked mattresses.
Five, four, three, two, one. Everybody stop. Time is up.
I think this has all been a bad dream. No, this is real life. Even though it's my job to destroy your yacht, I genuinely hope you win this thing.
Ever since I was a little kid, I always wanted a boat like this. I just got to get through this final phase and we're home free.
If you think about it, 100 hours ago, there was just a boat. And now there's all of this. I don't know how you did it. You nervous? No, no. That makes literally no sense at all.
This final phase may just be your worst nightmare. Ready your weapons. On top of all these machine guns, we have 100 cannons, a giant mine, the equivalent of all 15 from earlier. All of the fireworks, arrows and catapults all together in one final phase. Fire.
They're in the boat. I just saw one. Bro, they're actually aiming through the cracks.
And if things couldn't get more chaotic, one of the shooters accidentally shot the fireworks in and caused this to happen.
Well, it looks like you made the full package. What is going on?
I'm going to be honest with you, Sean. I don't think your yacht's going to make it. But I think it's time for the next stage. Prepare the cannons. Let's see if you've learned your lesson from the last time we fired these cannons. Fire.
I saw one hit. It's actually scaring me now.
Although one of the cannonballs hit his yacht, the crate and mound of dirt were able to stop the rest of the impact. And his defense against my flaming catapults were so effective, he even caught a burning death ball.
I caught it. Wait, did that land in the shipping container?
At the rate we're going, this is going to take all night. I think we just send everything all at once. I want you to launch cannons, fireworks, arrows, catapults, everything at the same time. Three, two, one. Fire everything.
Look at how much smoke is out there. It's like World War III. How much more is this gonna take, Jimmy?
Dude, this is killing me. You can't even see anything. There's so much smoke.
While we're watching Sean's yacht perish,
While we're watching Sean's yacht perish, we're going to enjoy some chocolate.
Fire the cannons.
Sean, so far, we've launched almost every attack we have on your yacht. But like every YouTube video I've ever done, we're saving the best for last. Or, in your case, the worst for last.
We took the 14 sea bombs from earlier in this video, combined them into one mega sea bomb. And it is currently on an RC boat heading directly to blow up your yacht. This explosion is going to be massive.
All right. There she goes. There she goes.
That was crazy. Dude! Let's go see if it's there. Let's go check it out. Let's go see my yacht.
Look at everything his yacht endured.
I've done a lot of weird things. I never experienced something like this before.
You didn't say it had to be pretty.
And after all of that, your yacht is still floating, but it does look like some stray bullets and cannonballs made it through. So, boys, bring it up.
Here's $50,000. Yeah. So you could actually repair this yacht. Yes.
Before we end the video, they're going to want to know... what is the name of your brand new yacht?
Its name is...
Oh, and if you're wondering, yes, we did ensure the lake was completely cleaned up after this video.
For the love of God, subscribe so we can pass T-Series.
Article published