About Sail Simulator
Understand the wind, and the boat follows.
Sail Simulator started with a question every new sailor asks sooner or later: why does the boat do that?
Why does easing the sheet a few degrees suddenly bring the speed back? Why does a sail that looks perfect stop pulling? Why does the wind feel stronger the faster you sail upwind? On the water, these lessons arrive one gust at a time, and the moment is gone before you can see what really happened.
So we built a place where the wind holds still long enough to be understood. Sail Simulator makes the invisible visible: the air bending around the sail, the suction pulling it forward, the instant the flow breaks away into a stall, and the forces that drive the boat ahead or press it over on its side.
The idea behind it is simple: once you understand the mechanics, sailing becomes much easier to grasp, and much easier to improve. Trim stops being a list of rules to memorise and becomes something you can reason about.
Who it's for
- Beginners who want to know why, not just how
- Sailing students preparing for their courses
- Racers who want to understand where speed comes from, and where it leaks away
- Curious engineers who want to see the physics behind the craft
How it works
Behind the animation is a simplified physics model: airflow around the sail, stall and luffing, hull resistance, heel and the moment a boat rounds up. It's built to show the right trends for learning, not to predict exact numbers for a real boat.
Sail Simulator is a learning project made by a sailor who is still learning, and it keeps growing.