If a galleon follows Real World construction, it has three to five masts and will typically weigh 500 tons or less, but can be as large as 2000 tons. Galleons have a low forecastle and square tuck stern. This type of vessel is built specifically for warfare, though there is some space that might be used for cargo if ammunition is sacrificed. Primary propulsion comes from the large square rigged sails on the main masts. Oak is used for the keel and pine for the hull, with whatever hardwood was aailable for the decks. While all galleons in the Real World carried guns, Erfworld galleon armament is likely more interesting.
A galleon probably makes any Units on board Water Capable.