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Sails. It's a square-rigged sailing ship.
Vasco Da Gama's ship was powered by the wind, it was a sailing boat.
To have the sails unfurled and rigged ready for sailing
One who sails, originally one who sails a sailing boat. It now means a member of the crew of a ship or boat, especially a person below the rank of officer. Of course, if a person sails a boat across the ocean single-handedly, he/she is indeed a sailor.
sails in a sailing ship
Sailing down wind with the sails fully open or 'gull winged'.
Sails and oars
sails in a sailing ship
Canoes with outriggers and sails in the Polynesias.
its sails
Sails
Most of the time. Some are powered by motors, but all of them have the sails (different numbers for different kinds of ships). The wind catches in the sails and moves the boat. Depending on the angle of the sail, the ship can move in almost any direction. Though it is easiest when the wind is right behind the boat. When the wind is blowing in the opposite direction you want to go, then there is a technique that you can use called "tacking".