Atlas of Battles

naval engagement, notable, ancient

Battle of Rhium

Battle of Rhium was a naval engagement fought in 429 BC at Gulf of Patras, in what is now Greece. It was part of the Peloponnesian War, which ran from 431 BC to 404 BC. The recorded result: Athenian victory. Recorded strength: 20 triremes against 47 triremes, some being used as transports.

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Fought429 BC
WhereGulf of Patras, Greece38.317N, 21.767E
OutcomeAthenian victory
BelligerentsAthensagainstSparta; Korinth
Casualties and lossesNoneand12 ships captured, with most of their crews
Part ofPeloponnesian War431 BC to 404 BC

Where it sits in the Peloponnesian War

Battle of Sybota, 433 BCBattle of Potidaea, 432 BCBattle of Plataea, 431 BCBattle of Naupactus, 429 BCBattle of Spartolos, 429 BCBattle of Rhium, 429 BCSiege of Plataea, 429 BCBattle of Corcyra, 427 BCBattle of Tanagra, 426 BCAetolian Campaign, 426 BCBattle of Sphacteria, 425 BCBattle of Pylos, 425 BCBattle of Solygeia, 425 BCBattle of Delium, 424 BCBattle of Megara, 424 BCBattle of Mantinea, 418 BCBattle of Orneae, 417 BCBattle of Melos, 415 BCBattle of Milet, 412 BCBattle of Abydos, 411 BCBattle of Cynossema, 411 BCBattle of Syme, 411 BCBattle of Eretria, 411 BCBattle of Cyzicus, 410 BCBattle of Ephesus, 409 BCSiege of Chalcedon, 409 BCSiege of Byzantium, 408 BCSiege of Andros, 408 BCBattle of Notium, 406 BCSiege of Athens, 404 BC433 BC404 BCBattle of Rhium, 429 BC
30 placed engagements of the Peloponnesian War in time order; taller ticks are more widely documented. Each tick is a link.

Record

Date429 BC (year precision)
PlaceGulf of Patras, Greece
38.317N, 21.767E
KindNaval engagement, ancient
Strength20 triremes47 triremes, some being used as transports
Casualties and lossesNone12 ships captured, with most of their crews
Commanders
  • Phormio
Battle of RhiumBattle of RhiumSiege of PatrasSiege of PatrasSiege of PatrasSiege of PatrasSiege of PatrasSiege of PatrasAthensAgrinioChalkidaTripoliPirgosVolosLamia100 km38.317N, 21.767E
The recorded site, with the nearest other engagements in the atlas. Present-day coastlines, rivers and borders; towns from Natural Earth.

Nearest engagements

In the same war

Battle of Rhium is one of 102 engagements of the 5th century BC in the atlas and one of 529 in present-day Greece.

Sources

Identity, coordinates, dates and the war from Wikidata Q2665646, released under CC0. Result, belligerents, commanders, strength and casualties from the infobox of the English Wikipedia article Battle of Rhium, revision 1370587450, read 2026-11-14, licensed CC BY-SA 4.0; the article's text is not reproduced here. Present-day country and state from Natural Earth. Dates before 1582 follow the Julian calendar as recorded.