Heavy Warships is a Dock technology. Upgrades War Galleys, Fire Ships and War Hulks to Galleons, Fast Fire Ships and Carracks.
- Building: Dock
- Age: Imperial Age
- Cost: 400 wood, 315 gold
- Research time: 65 seconds
- Available to: every civilization
The Imperial Age upgrade for the three main warship lines at once. Standard in long water games.
Figures from the game data for Update 185872 (September 2026), at the time of publishing.