A BIG engine or electric motor.. Or a BIG sail.
There is no set size for a sail. There are standard sizes for many vessels but a boat may have more than one sail and these too, will be different.
I learned to sail in a 7-foot long sailboat that regularly achieved 20 knots.
in a two handed sailing dinghy, the big sail is called the 'mailsail' and the smaller sail out the front is called a 'gib'
It's usually called the Mainsail, or as sailors pronounce it, the "mains'l". It is sometimes called the "sheet" too, though that is more generic. +++ The "sheet" is the line that controls the sail's angle across the boat.
You can sail anywhere on any size boat, although for one for a long voyage probably one that you will be comfortable on for a long time.
It depends if your sail boat is big or small. I would say about 5 or 4 people if its normal.
Catamaran, a boat with two small hulls to have less drag in the more water, so it can go faster than a boat with one big hull in the water.
To circumnavigate the world is to sail completely round the world in a boat.
Depends. If it's a toy boat, you find something that float: plastic, cardboard, lightweight wood etc. Then, you take a two small sticks and attach like and L. Turn the L around, and then attach a piece of cloth onto it. Then attach the sail to your boat. To make a real boat, big or small, the simplest way is to make a regular boat (preferably wood), and then maker the sail thing again, and attach it onto the boat.
Well it depends on how big the boat is and how big your garage is... Just make sure you can get the boat in and out.
the capacity of a boat depends on what type of boat it is and how big it is