The Classis Pontica was a Roman provincial fleet.

HistoryRoman Empire (1st century AD)Black Sea / Pontusmedium confidence

Notes on verification

Confirmed by Wikipedia and corroborated by peer-reviewed academic source (Wheeler, Acta Classica 2012) and independent specialized site RomanPorts.org.

Sources

Classis Pontica (en.wikipedia.org)
https://www.romanports.org/en/articles/human-interest/718-roman-military-ports.html (romanports.org)
https://www.semanticscholar.org/paper/Roman-fleets-in-the-Black-Sea-:-mysteries-of-the-Wheeler/4e1ff665fbb14d7f8ef3b069c9ca5dfee0bf7859 (semanticscholar.org)

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