|Unit Type||Naval Vessel|
|Cost||100 Wood |
|Line of Sight||24 meters|
|Train Time||17 seconds|
The Siege Bireme is an Atlantean naval unit available in the Heroic Age. It is strong against Arrow Ships and buildings but weak against Hammer Ships. Defensive buildings and Towers can outrange them so they are vulnerable to counterattack during the early stages of the game. However when upgraded in the Mythic Age, they will outrange them instead, making them valuable in taking down shore Defenses that can otherwise be impossible if unupgraded. This will allow transports to land safely in enemy territory. Since they deal crush damage, they are slightly effective against Myth Units.
As warships became longer, navies began to mount larger weapons on them, such as catapults and ballistae. Dionysius of Syracuse constructed extra-large triremes capable of supporting artillery, and Alexander mounted siege towers on a pair of ship hulls during his successful siege of Tyre. Later Roman imperial galleys could bristle with all sorts of towers and artillery.