Wind motion is the type of energy used by kites and sailboats.
As far as I am quite sure, there were definitely ships... and paddle boats.
Lanteen sails
Compass, sextant (or astrolabe), & timepieces.
Wind power
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He used a Viking merchant ship known as a knarr.
That means there are many different types of kites.
large boats?
Narrow boats.
a Lateen Sail
Most of the boats on the Thames are tourist and pleasure boats and there are very few goods carrying boats left.
Historically, kites were made from a variety of materials depending on regional availability. In ancient China, they were often constructed using bamboo frames with silk or paper as the sail. In other cultures, such as in India, cotton and lightweight woods were commonly used. The choice of materials was influenced by factors like durability, weight, and the kite's intended use, whether for recreation, signaling, or ceremonial purposes.