Simplify the following text for a Grade 5 native English-speaking person.
Original: The fleet of Columbus , as it sailed , consisted of the Gallega ( the Galician ) , of which he changed the name to the Santa Maria , and of the Pinta and the NiÃ a. Of these the first two were of a tonnage which we should rate as about one hundred and thirty tons .
Simplified: The Pinta is one of the ships Christopher Columbus sailed to the new world . The others were the NiÃ a and the Santa Maria