Latest / The Rise of Colonialism: How Europe Divided the World — Fexingo History / The Battle of Diu: How Portugal Broke the Indian Ocean
Transcript
- Lucas: So, we've talked a lot about the Portuguese in Asia — Malacca, the spice islands, the caravels that got them there. But there's one battle that really sealed their control of the Indian Ocean, and it happened way earlier than most people think. Luna: Before the Dutch and the British, right? Lucas: Exactly. The Battle of Diu, in 1509. It's sometimes called the Trafalgar of the East, and honestly, that's not an exaggeration. For a hundred years after that, no Asian power could seriously challenge Portuguese naval dominance in the Indian Ocean. Lucas: But to understand why it mattered, you have to remember what the Indian Ocean was like before the Portuguese showed up. For centuries, it was a shared space — Arab, Persian, Indian, Chinese vessels all traded freely, moving spices, textiles, and gold across vast distances. Luna: So it wasn't like the Atlantic, where European powers were already fighting over territory. Lucas: Right, not at all. It was a network of ports — Hormuz, Goa, Calicut, Malacca — all connected by monsoon winds. The Portuguese arrived in 1498, with Vasco da Gama, and they wanted to control that entire network. They had the guns, the ships, and the ruthlessness to try. Lucas: The key figure here is Francisco de Almeida, the first viceroy of Portuguese India, the Estado da Índia. He was a seasoned soldier, and his policy was simple: control the sea, and you control the trade. He used to say, 'the power of the Portuguese must rest on the sea.' Luna: 'The power on the sea' — that became their whole strategy, didn't it? Lucas: It did. Almeida refused to build massive land fortresses, unlike his successor Afonso de Albuquerque. Instead, he wanted a strong fleet that could patrol and enforce Portuguese dominance. That meant attacking any ship that didn't carry a Portuguese pass, or cartaz. Lucas: But Almeida's son, Lorenzo de Almeida, was also part of this story. In 1508, he was leading a patrol along the Malabar coast, chasing ships that were trading without permission. He ended up in a fight at Chaul, a port south of Bombay, against a combined Mamluk-Gujarati fleet. Luna: The Mamluk Sultanate of Egypt? That's a long way from home for them. Lucas: It is, and that's the key. The Mamluks were worried about the Portuguese cutting off the spice trade that went through the Red Sea and then to Cairo, and finally to Venice. Venice was the main buyer of spices in Europe, and they were panicking. They were the ones who urged the Mamluks to act. Lucas: So the Sultan of Cairo put together a fleet, built in Suez, with timber from the Balkans and guns from Venice. He placed it under a Kurdish admiral named Mir Hussain. Mir Hussain sailed down the Red Sea, crossed the Arabian Sea, and joined forces with the Sultan of Gujarat, Mahmud Begada, and his governor of Diu, Malik Ayaz. Luna: So you've got Egypt, Venice, and Gujarat all teaming up against Portugal. Lucas: Exactly. They met Lorenzo's small squadron off Chaul in March 1508. The fighting was brutal — the Portuguese were outnumbered, but they fought hard. Lorenzo's ship was surrounded, and he was killed. It was the first real defeat for the Portuguese in Asia. Lucas: When Francisco de Almeida heard that his son had been killed, he was devastated. But he was also a man of duty. He swore vengeance, and he set out to gather every ship he could. He left Cochin, the Portuguese base, with a fleet of about eighteen vessels and over a thousand men. Luna: Eighteen ships — that doesn't sound like a huge fleet, but it was enough? Lucas: It was because the Portuguese had two huge advantages: better guns and better ships. Their caravels and naus were more maneuverable, and they carried heavy bombards that could smash enemy hulls from a distance. The Mamluk-Gujarati fleet had some guns too, but they were mostly galleys, built for boarding, not for artillery duels. Lucas: The two fleets met off Diu, a fortified island port on the Gujarat coast, on February 3, 1509. Mir Hussain and Malik Ayaz had about a hundred ships, but many were small merchant vessels pressed into service. They anchored in a defensive line, hoping to use their numbers to overwhelm the Portuguese. Luna: But Almeida didn't just charge in, did he? Lucas: He was careful. He sent a small group of ships ahead to test the enemy's line, then he committed his main force. The Portuguese gunners were devastating. They fired broadside after broadside, and the Mamluk ships were soon ablaze. The battle lasted most of the day, but by sunset, the allied fleet was broken. Lucas: The aftermath was brutal. Almeida was angry, and he took no prisoners. He ordered many of the captured Mamluk sailors to be hanged or burned. It was a brutal message to anyone who dared oppose Portugal in the Indian Ocean. Luna: And that secured Portuguese control for how long? Lucas: For nearly a century. The Mamluks never recovered, and Egypt fell to the Ottomans a few years later. Gujarat was forced to make peace and pay tribute. The Portuguese built a fortress at Diu, which became a key stop on their route to Malacca and beyond. The Estado da Índia was truly born. Lucas: This battle changed the global trade balance. The spice trade shifted from the Red Sea–Alexandria route to the Cape route around Africa. Venice's monopoly on spice in Europe was broken. And it set a pattern: European naval power, backed by artillery, could dominate far-flung waters. Luna: It's amazing that one battle could have such a huge impact. Lucas: It really is. And it's one of those moments that often gets overlooked in the big story of European colonialism, but it was a turning point. If the Portuguese had lost that day, the history of Asia might have been very different — maybe the Dutch and the English would have had a harder time, or maybe the Ottomans would have expanded into the Indian Ocean. Lucas: You know, it's a privilege to be able to share these stories with you. And it's something we can only keep doing because of the listeners who support the show. If you've gotten something out of these episodes, a couple of dollars a month — buy me a coffee dot com slash fexingo — genuinely makes all the difference in keeping this going. Luna: Yeah, it's all listener-supported, so every little bit helps. Lucas: So, after Diu, the Portuguese were the undisputed masters of the sea lanes. But their rule was never absolute. They still had to deal with local powers who resisted — like the Zamorin of Calicut, who kept fighting for decades. And there were other Europeans coming, especially the Dutch, who would eventually challenge Portuguese supremacy. Luna: But the Battle of Diu was the moment it all started. Lucas: Exactly. It was the foundation. And it's a story that deserves to be remembered more than it is. So next time you think about European colonialism in Asia, remember that it didn't start with colonization or big land empires. It started with a naval battle off a small island in Gujarat.