Its triangular sail makes use of some effects of fluid dynamics.

As in the 1920s, education programs aimed at school children helped collect pennies to purchase the sails to make the voyage possible.

Changing the angle that the sail makes with the wind by pulling in or letting out the back hand.

Their white sails make a beautiful sight, especially at sunset.

At that point the sail made a flapping in the wind that sounded very much like laughter.

Our blue green sails made us hard to spot until we came hull up over the horizon.

The best way to learn a thing was to do it, he had found; sails or scrolls, it made no matter.

The sails, in that light breeze, made but a faint fluttering noise.

It shivered and sparked on the water, made ghostly the sails which had been set to use a fair wind.

We crossed the river, and the bright sails of trade-ships made my heart sing.