The Spanish Navy, officially the Armada, is the maritime branch of the Spanish Armed Forces and one of the oldest active naval forces in the world. The Spanish Navy was responsible for a number of major historic achievements in navigation, the most famous being the discovery of North America and the first global circumnavigation. For several centuries, it played a crucial logistical role in the expansion and consolidation of the Spanish Empire, and defended a vast trade network across the Atlantic Ocean between the Americas and Europe, and the Manila Galleon across the Pacific Ocean between the Philippines and the Americas.
The Spanish Navy was one of the most powerful maritime forces in the world from the late 15th century to mid-18th century. In the early 19th century, with the loss of most of its empire, the Spanish navy transitioned to a smaller fleet but it still maintained a significant shipbuilding capability and produced the first fully capable military submarine. In this time, the Spanish navy also contributed to the development of the destroyer class of warship and achieved the first global circumnavigation by an ironclad vessel.