its sails
The correct spelling is "sailboat" (boat propelled by sails).
Yeah!! What do you think they will do without them!
It is called mast.
Yes! -Over time, they stretch!
They act as aerofoils, much like the wings of an aeroplane, and work by the air pressure difference on the surfaces of the sails.
It holds (supports) the sails. You can also mount navigation systems on it.
It is called the mast
Not all of the sails are white only sails made out if Dacron are white. But sails made out of carbon are black.
A sailboat can certainly be operating under sail at night. Sailboats use their sails when there is enough wind to carry them.
No. The speed is constant and does not change.
Sail Clothe. It is a special kind of canvas made for sails.