You need a rather special plane to operate from water. The only way I have found to do it is to have prop lift assistance along with big wings and control surfaces so when it does lift off water is has sufficient control. Lots of trial and erro to find a combination that works.
My plane lifts off the water at about 8 knots and then quickly speed up to 20 when is starts to fly normally.
I have posted a screen shot called "Big VTO" which is my most successful design so far. It can land and take off from some pretty 'dry land' unusual places too.

Cool. I will have a look. :-)

One further tip. Fit one or more rocket motors. They provide enough thrust to get you clear of the water almost instantly!
If you walk you plane to the water edge you can see the plane and the transmitter at the same time.

I have posted today, 28 Dec 21, a series of 3 screenshots showing my Aero Commander twin taking off from water using rocket motors. With the rockets inclined at 45 degrees it has an instant take off with a rapid climb to 200+ m. It can then fly normally.
The Aero Commander has yaw controlled differential thrust which means it can manoeuvre on water as well as on land.
To land on water it has to touch down at the lowest possible airspeed and avoiding big waves or it will be damaged.

no plane can land on water at the moment without it shredding into pieces. but taking off just strap some rockets in diagonal position at your center mass. and boom your up just make sure your engines are on and keep that pitch down. but for floating you just need a big fusilage maybe some pontoons on the wings if its a big plane.

Originally posted by Badcook05:

no plane can land on water at the moment without it shredding into pieces. but taking off just strap some rockets in diagonal position at your center mass. and boom your up just make sure your engines are on and keep that pitch down. but for floating you just need a big fusilage maybe some pontoons on the wings if its a big plane.

As long as you land with very little forward speed, anything can land on water. (Tried and tested.) Everything floats, by the way. At least, I haven't found any plane to sink thus far.

The problem is the take-off. One can sail, though. Sailed all over the bay with various planes. Just don't go too fast as this tends to result in a crash, oddly enough. Basically, even planes that could generate enough thrust to take off can't because they crash. I haven't tried rockets so far, but as long as they provide vertical thrust they probably work.

Originally posted by w.f.schepel:

Originally posted by Badcook05:

no plane can land on water at the moment without it shredding into pieces. but taking off just strap some rockets in diagonal position at your center mass. and boom your up just make sure your engines are on and keep that pitch down. but for floating you just need a big fusilage maybe some pontoons on the wings if its a big plane.

As long as you land with very little forward speed, anything can land on water. (Tried and tested.) Everything floats, by the way. At least, I haven't found any plane to sink thus far.

The problem is the take-off. One can sail, though. Sailed all over the bay with various planes. Just don't go too fast as this tends to result in a crash, oddly enough. Basically, even planes that could generate enough thrust to take off can't because they crash. I haven't tried rockets so far, but as long as they provide vertical thrust they probably work.

yeah i did my first successful water landing last night but still cant take off without rockets or crashing the game.

Originally posted by Badcook05:

Originally posted by w.f.schepel:

As long as you land with very little forward speed, anything can land on water. (Tried and tested.) Everything floats, by the way. At least, I haven't found any plane to sink thus far.

The problem is the take-off. One can sail, though. Sailed all over the bay with various planes. Just don't go too fast as this tends to result in a crash, oddly enough. Basically, even planes that could generate enough thrust to take off can't because they crash. I haven't tried rockets so far, but as long as they provide vertical thrust they probably work.

yeah i did my first successful water landing last night but still cant take off without rockets or crashing the game.

They say water physics might come along eventually as a low priority. (At least, this is what I read on the discord. If you haven't joined yet, this is where most active people are and where you can get a lot of solid help & info. Helped me a ton.)

I would add that my plane "SimonVTOz" can land on water reliably and take off again repeatably using prop vertical lift not rockets. I have posted a screen shot today "SimonVTOz" with shows its layout. Not the easiest thing to fly but it is fun and has quite a performance.