DigitalDread

Supersonic on water is definitely possible, I have made supersonics watercrafts before. As for the Tweakscale questions, for those who have been playing KSP for awhile now will remember that the early versions of the game included different sizes of all the parts. Tweakscale just allows us to make larger parts with the vanilla game. I have tried a few versions of supersonic watercrafts before and larger isn't always better. 5M with a jet presents a few problems of its own. The weight, the balance, the simple act of getting to the water in one piece. When it comes to KSP builds, I will be the first to admit that I'm a rookie. But with my limited skill, I can get to mach 3 with 20 Kerbs onboard, then one of you more experienced and highly skilled builders can surely obliterate my score.

The water-speed challenge has been made before, but lets take it up a notch for 2020 before KSP2 gets here. MISSION: Your mission is simple. Build a watercraft of any size, and use any propulsion method you prefer, as long as you are using only 100% vanilla KSP parts (yes, expansion included). With the exception of tweakscale, no other mods are allowed in this build. CONDITIONS: 1- Your watercraft must get to the water by land under its own power, or towed there by another vehicle of your construction. Its your choice, but it must get there by land (no flying, or teleportation to the water) 2- Supersonic (343m/s) is the minimum entrance posting, with hypersonic (1715m/s) being the holy grail of Kerbal aquatic dreams. Imagine moving snacks across water at those speeds, yummy. 3- Whats the point of a watercraft if there are no passengers, so your watercraft must be able to transport a minimum of 20 Kerbals. 4- Finally, to truly claim the supersonic trophy, your watercraft must stay at or above its max supersonic speed for a minimum of 20 seconds so Bill Kerman has enough time to eat his cookies as supersonic 5- Post a link to your video to show evidence of your mad science in action... SCORING: Speed: Mach 1 = 100 points, Mach 2 = 200 points, Mach 3 = 400 points, Mach 4 = 800 points, Mach 5 = 1600 points, Mach 6 = have you lost your snacks... thats not possible Seating: 20 Kerbals = 100 points, 24 Kerbals = 200 points, 28 Kerbals = 300 points, 32 Kerbals = 400 points, 40 kerbals = 500