During re-entry tests, engineers deployed the drag sails to slow the satellite's descent.

Coastal fishermen set out at dawn with their drift sails, hoping the currents would bring a bountiful catch.

When the weather turned ugly, they quickly hoisted the storm sails and turned the bow into the wind.

The captain admired the scudding sails as the ship raced toward the horizon.

The old schooner trotted along smoothly with her gaff sails drawing in the steady breeze.

At dawn, a fleet of colorful balloon sails glided over the harbor, casting playful shadows on the water.

Engineers tested solar sails to propel the probe without using fuel, relying on sunlight pressure instead.

Scientists believe photon sails could propel tiny probes to the outer planets using powerful ground-based lasers.

Light sails unfurled silently, relying on streams of photons to push the probe toward its distant target.

The old schooner still carried two small riding sails to steady the ship in calm weather.