Naval units are units that can only travel over water. These units can be broken down into two categories: Economic and Warship. Economic ships can gather resources and provide utility. Warships are built for combat, with the capability to destroy ships and land units or structures close to shore.
Babylonian[]
- Economic ships
 |  |
| Fishing Boat (Babylonian) | Merchant Transport (Babylonian) |
- Warships
 |  |
| Bireme | Ram Ship (Babylonian) |
Celtic[]
- Economic ships
 |  |
| Fishing Boat (Celtic) | Merchant Transport (Celtic) |
- Warships
 |
| Swanship |
Egyptian[]
- Economic ships
 |  |
| Fishing Boat (Egyptian) | Merchant Transport (Egyptian) |
- Warships
 |  |  |
| Trireme (Egyptian) | Fire Ship (Egyptian) | Catapult Trireme |
Greek[]
- Economic ships
 |  |
| Fishing Boat (Greek) | Merchant Transport (Greek) |
- Warships
 |  |  |
| Trireme (Greek) | Fire Ship (Greek) | Ballista Trireme |
Norse[]
- Economic ships
 |  |
| Fishing Boat (Norse) | Merchant Transport (Norse) |
- Warships
 |  |
| Longship | Fire Ship (Norse) |
Persian[]
- Economic ships
 |  |
| Fishing Boat (Persian) | Merchant Transport (Persian) |
- Warships
 |  |  |
| Galley | Ram Ship (Persian) | Mangonel Galley |
Romans[]
- Economic ships
 |  |
| Fishing Boat (Roman) | Merchant Transport (Roman) |
- Warships
 |  |
| Liburnian | Enneris |