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Fragfield Madman Jet Ski

Time for fun!

The Fragfield Madman is a pure joy toy. Use it safely or madly, it will let you race your friends, jump waves or simply carry you quickly where you want to go.



Propelled by a powerful 3 cylinders modular engine and hosting a heavily tuned ECU for balance, you will get addicted to that little rocket.




At only 286 Kg and 6748 $, it is the perfect annex to your large ship when it is time to quickly go explore a nearby island or fleeing a sinking ship.

Weight: 286 Kg
Price: 6748$
Top Speed:
Sport Mode: 55 knots
Wavebuster Mode: 40 knots
Broken ribs: Expect a few




Sport Mode
In this mode, the fins will keep the Madman at its limits. You will need to manage your throttle to stay in full control. Use in calm water on low wind day.

When you are in full throttle, the fins will make the Madman light on the water for max speed. But when you release the throttle, they will get more aggressive to offer you more control. Learn to play with your throttle and you will get good at it!

Wavebuster Mode

In this mode, the fins are always aggressive, sticking the Madman to the water at the expense of speed. Use it for safe travel and on bad weather days.



1. Turn the key.
2. Select the driving mode you want by pressing the spacebar key. Two modes are available, Sport & Wavebuster.
3. The speed on the monitor is in knots.
4. Turn on the under water light if you feel like giving a show (KEY 1)
5. Enjoy!



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I spent a lot of time tuning that little beast for a balance of speed and control. But mostly I wanted it to be FUN TO DRIVE. I could have made it more way more stable, but I do like the idea of getting use to drive it to enjoy racing your friends. So I made it controllable, but you will lose control if you push too hard while not knowing the machine. This is why it is fun to race that beast between friends. Your skills will make you win.

Also, you will notice that the Madman tend to fly in bad weather if you jump waves. This is the annoying Stormworks physic engine, which is well known to make boats fly. Nothing we can do about it … just lower your speed when it happens.


The FF Madman hull was heavily inspired by a Killman88 creation, the Crazyhorse jet ski, which unfortunately is broken right now. After asking his permission I stripped the hull, made it larger and completely rebuilt it. Here is the orginal creation from Killman88 ...

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2653625121