In some of the new sail designs the sails are remote controlled and have some very untraditional shapes.
They do because before ships had motors to make them move in the water. With the sails the wind would push the ship.
No I believe the Egyptians did.....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................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no the wind blows the sail/s and makes the ship/boat move :)
"Square sails" which are not really square, were/are referred to as four-cornered sails.
yes
Ships move in water by means of propellers, sails, or oars. People move in water by swimming. Squid use jet propulsion. So there are various techniques.
A sailor can manage a ship better with rudders and move the ship. Larger sails were also moveable so they could change direction and speed.
He had the caravel which has 3 sails.
Yes
the caravel has triangular sails as well as square sails. Square sails carried the ship forward when the wind was at its back. Triangular sails allowed the caravel to sail into the wind. the caravel was better than other euoopean ships of the time at this type of sailing
They used to be important for international trade when ships had sails and depended on the winds to move them.
Canoes with outriggers and sails in the Polynesias.