Any ocean in the world. The Bering sea, Atlantic and Pacific can be very rough.
Sailing from Europe to South America, the most practical route would be across the Atlantic Ocean.
No, as winds can be turbulent. Should the balloon lose altitude, it would probably not float for very long.
If the he is Christopher Columbus, he was looking for a water route to East Asia.
Atlantic Ocean
The strength of the hurricane would decrease, as hurricanes get their energy from warm ocean water.
The Arabian Sea, Indian Ocean, and Bay of Bengal.
This would be a hurricane.
you would likely go across the south pacific ocean.
From the Indian to the Atlantic going West.
He would travel from the South Atlantic Ocean to the Indian Ocean.
north