Since we seem to be talking about the Portuguese - this is the kind of ship in which Francis Alemida sailed into Bombay port, one morning in 1509. It was large enough to be stable in heavy seas, and roomy enough to carry provisions for long voyages.
Interestingly, the Portguese word for this kind of ship is nao, identical to the Hindi nao, which comes from the Sanskrit nauh, meaning boat. Not only in Portuguese and Hindi - the word for boat or ship is amazingly similar in Welsh (noe), Greek (naus), Armenian (nav), Old Irish (nau), and Old Norse (nor).
Linguists agree that the original source of such common words were the Proto-Indo-Europeans, a group of people who lived 5500 years ago (the time scale is much debated!). They were pastoral nomads, who had domesticated the horse (eqwos).
The cow (Proto-Indo-European 'gwous') played a central role, both in mythology and reglion. Aside: the Sanskrit word for cow is go or gow.
The origin and migration of the Proto-Indo-Europeans is a subject of much dispute - did they migrate from Europe to Asia, or from Asia to Europe? Scholars can't seem to agree. But the history of these words continues to fascinate.