Classis Britannica — Interactive Naval Atlas

Explore the Classis Britannica, the Roman fleet that controlled the waters around Britain from AD 43 to the late 4th century. Toggle categories below and click any site to learn about naval bases, operations, and the fleet's role in conquest, defense, and industry.

Fleet HQ Major Base Minor Base Saxon Shore Operations Industry Battles Routes

Naval Sites (click to fly & open)

Based on archaeological evidence, inscriptions, and historical sources. The Classis Britannica operated from AD 43 to the late 4th century, evolving from invasion fleet to coastal defense force.