The three causes of bow-down

Not when the keel and rudder are separated.

That is simply bad seamanship. The boat has too much canvas up, or is steered poorly.

So you design a rudder but install 2? Quite funny.

 

Downwash/Sidewash
Keel on rudder

 

Nice little drawing.

 

Of course, a reasonable peace treaty between aeronautical engineers and naval architects would be simpler:

1-3 tons SailBoat for aeronautical engineers

100-100,000 tons Ships for naval architects

 

What do mechanical engineers get? I want to throw my hat in the game if engineers are getting sailboats and ships.

 

Your technical posts are very detailed Carlos, but they do make my head hurt when trying to read them slowly and understand them.

 

No, that's not correct. As you say it is just basic physics, but you need to understand physical principles.