The Classis Pontica was later established on a permanent basis by Emperor Nero.
Notes on verification
Corroborated by two independent sources (Wikipedia, RomanPorts.org) with consistent core claim, though exact date varies (57 vs. 64/65 AD) across sources including a peer-reviewed academic paper.
Sources
- Classis Pontica (en.wikipedia.org)
- https://www.romanports.org/en/articles/human-interest/718-roman-military-ports.html (romanports.org)
- https://h2g2.com/approved_entry/A74481807 (h2g2.com)
- https://warhistory.org/article/roman-imperial-navy-2nd-3rd-centuries (warhistory.org)
- https://historycooperative.org/roman-boats/ (historycooperative.org)
- https://roman-empire.net/army/fleet (roman-empire.net)