ship bow lifting

[muhammedexplosive911]

ive tried using weight blocks at the bow, which slow the boat down a lot, i have also tried control surfaces which dont make a difference.

[Teamkiller]

You are gliding on water with your bow up at high speed
or
You are traveling at normal speed (below 60 km/h) with normal leveling.

Make your choise.

In RL engeeniers have a third choise: go bigger (battleships as a good example). But this one is not that practical in SW.

[Ra-Ra-Rasputin]

Control surfaces, control fins and rudders make a world of difference. You just have to use and angle them properly.

[muhammedexplosive911]

Originally posted by Ra-Ra-Rasputin:

Control surfaces, control fins and rudders make a world of difference. You just have to use and angle them properly. :lunar2020thinkingtiger:

i tried using them, but they make my bow rise up even more, even if i invert them

[Ra-Ra-Rasputin]

You need to control them, not invert them. They're not wings, they're control surfaces.

If the + side is up top, put a couple of fin rudders at the bottom of your ship, wire them up with electricity and put a constant number of 1 on them.

[muhammedexplosive911]

i have them controlled automatically, the more im pitching the more are my control fins pitching.

[Sampak]

Make sure you have the negative or positive side correct. And place them at the rear of the ship, from my experience, this will lift the rear end and actually help your hull stay higher in the water, possibly speeding you up too. You can use a fin up from and then set it to angle downward to bring your bow lower, but in my opinion that is inefficient (increasing drag again).

[Ra-Ra-Rasputin]

Well, i could fix it real quicklike if you post your creation :)

[muhammedexplosive911]

Originally posted by Ra-Ra-Rasputin:

Well, i could fix it real quicklike if you post your creation :)

https://steamcommunity.com/sharedfiles/filedetails/?id=2546217571 there ya go

[luchaticat]

nice creation, i have no answer to your problem. i just wanna say that for your first creation it is good

[Teamkiller]

Try to move your propellers closer to the center of a ship, or add some "whale-tail" fin (just, say 5-10 long plane of blocks at waterline at the back in a width of a ship).

It will help you to slide the water in a more controlable way

[Ra-Ra-Rasputin]

Well, i opened it up and immediately i see you're trying to cheat with rotors inside the hull. That's your first problem, as it has significant downsides too.

Also if you're so concerned with weight that you're replacing most of your internal blocks with wedges, you probably shouldn't have any weight blocks. 1 weight block requires 19 cubes to wedges to offset its mass. I've made a working boat with less than 19 cubes in it. :)

Give me a few minutes to fix this.

[muhammedexplosive911]

Originally posted by Ra-Ra-Rasputin:

Well, i opened it up and immediately i see you're trying to cheat with rotors inside the hull. That's your first problem, as it has significant downsides too.

Give me a few minutes to fix this.

the boat sits too low in the water without em, i dont want my boat to flood when i try to get out of it. thanks to the weight blocks my boat unflips itself when it flips, thats why i have them.

[Ra-Ra-Rasputin]

The problem is you're trying to fix an issue with weight blocks instead of active measures when you're doing other weight saving features. It's like using monster truck tires while having a carbon fiber hood so it's lighter and goes faster.

Well, i had a little fun with it. The PID's settings are totally thrown in and i didn't test them in any wind (my guess is they won't work, and you need a switch or something to tweak the settings for high wind), but it works fine in low wind conditions (~5% ish) that i made a couple of longer test runs in to see how fuel consumption affects it. Hopefully i remember to remove the funny fire hose that spewed diesel everywhere to make it chug through faster.

Either way your engine is quite overdone for the job, you could probably hit the speed with 30% less fuel consumption.

https://steamcommunity.com/sharedfiles/filedetails/?id=2546343873

All parts i touched are in pink, except those weight blocks and rotors that i threw away. You can slap them in again if you want but i don't see any need for them. Runs at a steady 65m/s or 234 km/h. It's not exactly fast when compared to my tanker, but it's not slow either.

[Sampak]

LMAO. Not exactly fast. ~150 mph....a tanker.

Ok after looking at the screenshots and reading his experience I was going to guess some cheat/rotor blocks were likely used for bouyancy. Looks like you beat me to it and got rid of those.

However if OP's description is correct, a 5000 kg (we'll call it dry weight) boat should not be having weight problems or sitting too low. I've built 14000 kg boats that have plenty of clearance above water. And I'm absolutely a hack at art and design language.

Also I've only ever managed to build boats that go 50-60 knots if that, that nearly always try to become airplanes at those speeds. Interesting. Of course, I've only ever approached building boats with some sort of "scale" realism lol. I haven't reached a comfort level yet of "Kerballing" my builds...just yet. 😄

[Ra-Ra-Rasputin]

Originally posted by Sampak:

LMAO. Not exactly fast. ~150 mph....a tanker.

Ok after looking at the screenshots and reading his experience I was going to guess some cheat/rotor blocks were likely used for bouyancy. Looks like you beat me to it and got rid of those.

However if OP's description is correct, a 5000 kg (we'll call it dry weight) boat should not be having weight problems or sitting too low. I've built 14000 kg boats that have plenty of clearance above water. And I'm absolutely a hack at art and design language.

Also I've only ever managed to build boats that go 50-60 knots if that, that nearly always try to become airplanes at those speeds. Interesting. Of course, I've only ever approached building boats with some sort of "scale" realism lol. I haven't reached a comfort level yet of "Kerballing" my builds...just yet. 😄

I'll give you a winky hint on how to go really fast, but i use a steam controller to drive this thing.

https://steamcommunity.com/sharedfiles/filedetails/?id=2323737606

You can do this with it. Also, if you're wondering why the joystick icon wasn't showing, i had a strange issue where its behavior was reversed, meaning when the joystick icon was visible, joystick mode was off.

https://www.youtube.com/watch?v=lERZLPlDAL8

It has youtube song playing on the background (cut off in this version of the video) and game sounds on because someone accused me of speeding up the footage by 2x or 3x :)