Rome had no significant navy before the First Punic War and built one, on the reported model of a captured Carthaginian ship, to contest Sicily. It lost fleets to storms repeatedly and rebuilt each time — a demonstration of the resources rather than the seamanship of the Republic.
Pompey's campaign against the pirates in 67 BCE was the second great naval effort, and its speed and thoroughness were remembered as exceptional. After Actium, Augustus established permanent fleets at Misenum and Ravenna with a professional service, and provincial squadrons on the Rhine, Danube and in Egypt and Syria.
Under the Principate the navy had no enemy. Its work was transport, patrol, suppression of piracy and river control on the frontiers. Service was lower in status than the legions, with longer terms and citizenship on discharge.
What the evidence supports
Augustus established permanent fleets at Misenum and Ravenna.
Attested in narrative and in inscriptions recording sailors' service and discharge from both fleets.
Naval service carried lower status than legionary service.
Visible in terms of service and in the recruitment of non-citizens, with citizenship granted on discharge as in the auxilia.
The Republic's fleet losses to weather exceeded its losses to battle.
Polybius records repeated catastrophic storm losses in the First Punic War, and treats them as a consequence of inexperienced seamanship and unsuitable ship design.
Primary sources
Polybius, Histories 1.20-64
The construction and losses of the first Roman fleets.
Plutarch, Life of Pompey 24-29
The campaign against the pirates.
Pliny the Elder, Natural History preface and books on geography
The author commanded the fleet at Misenum and died in the eruption of 79 CE.
Battles
31 BCE
Actium
A naval battle off western Greece that ended the civil wars, delivered the Roman world to Octavian, and was immediately rewritten by the winner.
How to read the evidence labels
- Evidence level: Documented
- Supported by a named primary text or by excavated material evidence.
- Evidence level: Probable
- Supported by strong inference that most specialists accept.
- Evidence level: Disputed
- Substantial specialist disagreement exists; competing readings are stated.
- Evidence level: Literary
- Belongs to poetic or mythological construction rather than to history.
- Evidence level: Mythological
- Belongs to shared religious or mythic tradition rather than to any single text.
- Evidence level: Unknown
- The available evidence is insufficient to decide.
These labels describe the status of the evidence, not our confidence in a conclusion. A claim marked Literary is not a claim we doubt; it is a claim about what kind of thing a poem is.