Latest / The Achaemenid Empire: Persia's Golden Age of Power — Fexingo History / The Achaemenid Navy: Persia's Forgotten Fleet
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- Lucas: So we've talked a lot about the Achaemenid army—the Immortals, the archers, the cavalry. But there's a whole other side to Persian military power that doesn't get nearly enough attention: the navy. Luna: The navy? I don't think I've ever really thought about Persia having a fleet. Lucas: Exactly, and that's the thing—they had a huge one. By the time of Xerxes, the Persian navy was the largest the Mediterranean had ever seen, with over a thousand ships. And it wasn't just Persian—it was a coalition fleet, drawing from every coastal subject people. Lucas: Cyrus the Great started it. When he conquered Lydia and the Ionian Greek cities, he inherited their ships, but he also quickly realized that to control the eastern Mediterranean and the Persian Gulf, he needed a permanent naval force. Luna: So he basically took over existing fleets? Lucas: Right. The Phoenician city-states like Tyre and Sidon were the backbone—they were the best shipbuilders and sailors in the region. Then you had the Egyptians, the Cypriots, the Cilicians, and the Ionian Greeks themselves. The Persians were brilliant at integrating these diverse naval traditions into one command structure. Lucas: Each contingent kept its own ships and captains, but they were under a Persian admiral. And the empire invested heavily in naval bases—especially in Phoenicia and Cilicia—with dry docks, arsenals, and warehouses for grain and rigging. Luna: Were these the same kind of ships the Greeks used? Lucas: Mostly. The standard warship was the trireme—three rows of oars, fast, and with a bronze ram on the front. The Phoenicians actually developed the bireme earlier, a two-row version, but by the 5th century BCE the trireme was the norm. The Persians also had larger transport ships for cavalry and supplies. Lucas: And they didn't just build ships—they maintained a standing navy. The Persepolis Fortification Archive mentions payments to shipwrights, rowers, and sailors, so we know these were professional crews, not just levies called up in wartime. Luna: That's a huge logistical operation. Lucas: It really was. And it paid off in the early campaigns. During the Ionian Revolt, the Persian navy crushed the Greek fleet at the Battle of Lade in 494 BCE. That was the turning point—after that, Miletus fell and the revolt collapsed. Lucas: Then under Xerxes, the fleet was central to the invasion of Greece. Herodotus says he had 1,207 triremes, which is probably an exaggeration, but even half that number would have been overwhelming. They supported the army along the coast, bringing supplies and ferrying troops across the Hellespont. Luna: But then Salamis happened. Lucas: Right. Salamis was a disaster—the Greeks used the narrow straits to negate Persia's numerical advantage. But here's something interesting: after Salamis, the Persian navy didn't just disappear. It remained active in the Aegean for decades, and actually won a major victory at the Battle of Eurymedon? No, that was a Greek victory. Sorry—the Persians did win at the Battle of the Eurymedon? Wait, I'm mixing up. Luna: Take your time. Lucas: Let me clarify. After Salamis, the Persian navy was still strong enough to threaten Greek interests. The Greeks won a decisive victory at the Battle of the Eurymedon in 466 BCE, but later, in 450 BCE, the Persians actually won a naval battle against the Athenians off Salamis in Cyprus—yes, there's a second Salamis, this one on Cyprus. That battle led to the Peace of Callias, which we covered in episode 34. Luna: So the navy was still a force to be reckoned with even after the Persian Wars. Lucas: Absolutely. And it wasn't just about war. The Persian navy also protected trade routes across the Mediterranean and the Persian Gulf. They suppressed piracy, escorted merchant ships, and even explored new waters. Under Darius, the admiral Scylax of Caryanda sailed down the Indus River and then along the coast of the Arabian Sea, mapping the route to Egypt. Lucas: But there's a paradox. For all their naval power, the Persians never really developed a native shipbuilding tradition. They relied entirely on subject peoples for ships and crews. That meant that when the empire weakened and those subjects rebelled, the navy could evaporate quickly. Luna: Like when Egypt revolted? Lucas: Exactly. Egypt was a major source of ships and sailors. When Egypt broke away in the 5th and 4th centuries, the Persian navy was significantly weakened. By the time Alexander the Great invaded, the Persian fleet was a shadow of what it had been under Xerxes. Lucas: It's a reminder that even the most powerful empire has to maintain its own core capabilities. Outsourcing can work for a while, but it's a vulnerability. Luna: That's a really good point. And speaking of vulnerability—this show takes a lot of research and time to produce. If you've been enjoying these deep dives into Achaemenid history, supporting us on buy me a coffee dot com slash fexingo makes a real difference. Even a couple of dollars a month helps keep the episodes coming ad-free. Lucas: Yeah, that's true. And we're really grateful to everyone who's chipped in. It allows us to spend more time on the archives and less on worrying about funding. Lucas: So back to the navy—one of the most fascinating aspects is how the Persians administered it. We have clay tablets from Persepolis that record rations for sailors, and even mention a 'shipyard' at Susa. The empire was building and maintaining ships hundreds of miles from the sea. Luna: Wait—Susa is inland. How do you build a navy there? Lucas: They transported the timber from the mountains of Lebanon and elsewhere, built the hulls at Susa, and then disassembled them and carried the pieces to the Tigris or Euphrates, where they were reassembled and floated down to the Persian Gulf. It was an incredible logistical feat. Lucas: And the Persian Gulf fleet was important too—it helped secure trade with India and Arabia. The Persians even established a colony on the island of Failaka in Kuwait, which served as a naval station. Luna: So they were really thinking globally, in a way. Lucas: In the context of the ancient world, absolutely. The Achaemenid navy connected the empire from the Indus to the Nile, from the Persian Gulf to the Aegean. It was the glue that held the coastal provinces together. And yet, it's often overlooked because the Greeks wrote the history and they focused on their own naval victories. Luna: So what happened to the Persian navy after Alexander? Lucas: After Alexander conquered the empire, he actually absorbed much of the Persian fleet—he used Phoenician and Cypriot ships in his own campaigns. But the unified Achaemenid naval system was broken up. The successor kingdoms built their own navies, and the Persian tradition of a multi-ethnic, centrally administered fleet faded away. Lucas: It's a shame, because there's evidence that the Persians were experimenting with larger ships—the 'fours' and 'fives' that later became standard in the Hellenistic period. They just didn't get a chance to develop them fully. Luna: So the Persians were actually ahead of their time in naval organization? Lucas: In many ways, yes. Their ability to integrate so many different shipbuilding traditions, maintain a standing fleet, and support it with a logistical network spanning thousands of miles was unmatched until the Romans. The Achaemenid navy deserves to be remembered as more than just the fleet that lost at Salamis.