It's been done. I've been looking into stuff like this myself, and the impression I get is that smaller boats are generally designed only for daysailing because people don't buy small boats for sailing across oceans. If the boat designed for daysailing it will probably not be tough enough. Boat design is pretty complicated, so my own plan is to buy a small, cheap yacht of a type that someone else has sailed across oceans in.
A sailboat can certainly be operating under sail at night. Sailboats use their sails when there is enough wind to carry them.
I don't see why not: Don't be scared, be prepared!
The wind is what causes a sailboat to sail.
This all depends on how fast the sailboat can travel. Speed is measured in knots. 1 knot of speed is equal to 1 nautical mile per hour. The distance from San Francisco, CA to Hawaii is approximately 2400 miles. Let's say your sailboat averages 5 knots. Divide 2400 miles by 5 miles per hour, and you get 480 hours from San Francisco, CA to Hawaii. Then divide 480 by 24 hours per day, and you get 20 days. Therefore, if your sailboat traveled at 5 knots nonstop from San Francsico, CA to Hawaii, it would take you 20 days to sail there.
May
People have sailed around the world in smaller craft and lived to tell the tale, so I'm sure it's POSSIBLE to sail some 3000 miles in a boat about as big as my car. I suppose the answer is that anything over 6 feet is big enough, but don't be surprised if you don't make it. Really, if you have to ask then you shouldn't try it.
Anywhere from 3 weeks to a month depending on weather.
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.
Sailboat is to sail as kite is to fly, just as airplane is to wing and oil tanker is to engine.
Yes, sailboat is a compound word. (sail + boat = sailboat)
its sails
sailboat sailcloth sailfish