HistoryRoman Empire (1st-3rd century CE)Black Sea / Anatolia / Danubelow confidence

The Classis Pontica coordinated with the neighboring Roman fleet of Moesia, known as the Classis Flavia Moesica.

Notes on verification

Confirmed by Wikipedia and supported by a peer-reviewed archaeological paper showing adjacent operational zones; however, no primary source details specific joint coordination or command structure.

Sources

The Classis Pontica coordinated with the neighboring Roma… · DeepInquiry