Lug sail

A lug sail is like a big, flat piece of fabric that goes up and down a tall straight stick, called a mast, on a sailboat. The sail is attached to the mast with ropes on two sides and hangs down to catch the wind. When the wind blows, it pushes the sail and makes the boat move forward in the water.

The cool thing about a lug sail is that it can be adjusted to catch the wind from different directions. If you want to go in a certain direction, you can tilt the sail one way or the other to catch the wind just right. This lets you steer the boat where you want it to go.

It's important to be careful with a lug sail because it can be really big and heavy. Plus, the wind can be really strong sometimes and push the boat really fast, so you need to know how to control the sail and the boat so you don't go too fast or lose control.