caravel, originally a Portuguese fishing boat with
lateen sails for local trade; but by the start of the 14th century it became the name of a small merchantman with lateen sails on two masts, a larger version of which was developed by
Henry the Navigator for his
exploration by sea along the coast of West Africa. This type was
carvel-built, had no
beakhead or
stern castle, but a simple curved
stem and a plain
transom stern. Originally they carried lateen sails on all three masts (
caravela latina), but they developed into three-masted, and occasionally four-masted, ships
square rigged on their two, or three, forward masts with a lateen-rigged
mizzen (
caravela redonda). This provided a better balance of sail power and avoided to a great extent the main disability of the lateen sail, the immense length of the
yard on which the sail was set and the need when
tacking to lower the sail in order to bring the yard to the other side of the mast. It also enabled them to sail closer to the wind, and gave them greater manoeuvrability than would otherwise have been the case. The average overall length of a three-masted caravel was 23–5 metres (75–81 ft), although a few were built up to 30 metres (100 ft). Of the three ships in which
Columbus's expedition sailed in 1492, both the
Niña and
Pinta were caravels, as were those used by
Vasco da Gama.