The Classis Misenensis was founded by Augustus in 27 BC, when the fleet of Italy, until then based mostly at Ostia, was moved to the new harbour of Portus Julius at Misenum in the Bay of Naples.
[3] Among the sailors of this fleet, Nero levied the legio I Classis and used some of its leading officers in the murder of his mother Agrippina the Younger.
[1] In 192, the Misenum fleet supported Didius Julianus, and then participated in the campaign of Septimius Severus against Pescennius Niger, transporting his legions to the East.
[5] In 324 the fleet's ships participated in the campaign of Constantine the Great against Licinius and his decisive naval victory in the Battle of the Hellespont.
The following list is based on Werner Eck and Hans Lieb, "Ein Diplom für die Classis Ravennas vom 22.