Real Life History
This information is not to be used in-game, but is instead to help you, the player, understand what your character is sailing
"A galleon was a large, multi-decked sailing ship used primarily by the nations of Europe from the 16th to 18th centuries. Whether used for war or commerce, they were generally armed with cannons.
Galleons were an evolution of the caravel and carrack (or nao), for the new great ocean going voyages. A lowering of the forecastle and elongation of the hull gave an unprecedented level of stability in the water, and reduced wind resistance at the front, leading to a faster, more maneuverable vessel. The galleon differed from the older types primarily by being longer, lower and narrower, with a square tuck stern instead of a round tuck, and by having a snout or head projecting forward from the bows below the level of the forecastle."
(Source & full article: Wikipedia)