This is really a matter of opinion, but a catamaran or trimaran does provide a more stable platform in rough seas, such as are encountered in the Southern latitudes.
235 days
To circumnavigate the world is to sail completely round the world in a boat.
they travel by a gondala atype of boat
Can't be done unless it would double as a boat as well.
Most of the passenger river boat travels at 35 knots per hour.
it all depends on water conditions and the boat.the right size boat for a 100 hp should do around 55-60mph
you should stay at least 100yds away
yes because you can go on boat around the whole world this is from Laura jenkins
the greeks traveled around the moutains by boat
Depends on how much fuel, food and spares it's carrying. Several times around the world isn't a problem.
You could travel by boat, or you could walk. Depends on where in the world you were.
A plane and a boat can both travel around the globe, assuming that the plane has enough fuel for the trip and that the boat travels a path with open waters.