Scott #: 418
A colorful miniature sheet showing design of a Galley and a Galleon.
Galley: A galley is a type of ship propelled by rowers that originated in the Mediterranean region and was used for warfare, trade and piracy from the first millennium BC. Galleys dominated naval warfare in the Mediterranean Sea from the 8th century BC until development of advanced sailing warships in the 16th century.
After the fall of the Western Roman Empire galleys formed the mainstay of the Byzantine navy and other navies of successors of the Roman Empire, as well as new Muslim navies. Medieval Mediterranean states, notably the Italian maritime republics, including Venice, Pisa, and Genoa, used galleys until the ocean-going man-of-war made them obsolete. The Battle of Lepanto was one of the largest naval battles in which galleys played the principal part.
Galleys were in common use until the introduction of broadside sailing ships of war into the Mediterranean in the 17th Century, but continued to be applied in minor roles until steam propulsion.
Galleon: A galleon was a large, multi-decked sailing ship used primarily by European states from the 16th to 18th centuries. Whether used for war or commerce, they were generally armed with the demi-culverin type of cannon.
The galleon was powered entirely by wind, using sails carried on three or four masts, with a lateen sail continuing to be used on the last (usually third and fourth) masts. They were used in both military and trade applications, most famously in the Spanish treasure fleet, and the Manila Galleons.
The galleon continued to be used into the 18th century, by which time purpose-built vessels such as the fluyt, the brig and the full rigged ship, both as a trading vessel and ship of the line, rendered it obsolete for trade and warfare respectively.
Text Source: Wikipedia