How did Portuguese ships gain an advantage over Arab and Malay shipping in the Indian Ocean?

Portuguese ships gained a decisive advantage over Arab and Malay shipping in the Indian Ocean primarily through superior naval technology and tactics. While local trade had long been conducted by Arab and Malay merchants, Portuguese vessels were specifically designed to be sturdy enough to withstand Atlantic gales and were equipped with cannon.12

This armament allowed the Portuguese to employ standoff artillery tactics, enabling them to engage and destroy opposing vessels from a distance that their rivals could not match. Furthermore, the Portuguese established a strategic system of fortified trading posts—such as Goa, Malacca, and Hormuz—which allowed them to dominate key sea-lanes and control the maritime spice trade. By securing these strategic strongpoints, the Portuguese were able to project power across the Indian Ocean despite having limited manpower.34251