Spain had lost its South American colonies decades earlier, but it had never fully accepted the loss. In 1864 a Spanish fleet seized the guano-rich Chincha Islands off Peru, a blunt attempt by the monarchy of Isabella II to reassert influence over the continent it once governed. Guano - seabird droppings prized as fertilizer - was the oil of its day, and the islands were worth a fortune. Chile, watching from the south, refused to stay neutral. It declared war and shut its ports to Spanish ships, becoming the only nation on the coast firm enough, at first, to stand against Madrid. Peru would soon join, galvanized into action by its president Mariano Ignacio Prado, but in those early months Chile stood alone. The decision left it dangerously exposed. Its small navy faced a Spanish squadron of far heavier ships, and along the long, undefended coastline, the question was not whether Spain would strike, but where - and whether anything Chile owned could answer when it did.

Juan Williams Rebolledo, commanding the Esmeralda, chose not to wait for that blow. He understood Spanish movements well enough to lay a trap, patrolling the stretch of sea between Coquimbo and Valparaiso for any vessel that wandered within reach. Aboard his corvette served three young officers whose names Chile would later carve into monuments: Arturo Prat, Juan Jose Latorre, and Carlos Condell. When the Covadonga appeared near Papudo, Williams used the oldest trick in naval warfare. He flew a false flag, closed the distance, and struck before his enemy understood what was happening. The Chilean gunners proved sharper than the Spanish crew. Shell after shell tore into the Covadonga, cutting down her sailors until Fery, his ship crippled and his men falling, called out his surrender across the water.

Williams ordered Manuel Thomson to board and take the prize. Chilean engineers swarmed the battered schooner and worked to keep her afloat, saving the vessel rather than letting it sink - a quiet feat of seamanship that became one of the proudest moments of the war for Chile. Fery, six other Spanish officers, and 115 sailors were taken prisoner. The capture yielded an unexpected trophy as well: the private war correspondence of the Spanish admiral, Juan Manuel Pareja. Reading his plans laid bare and his campaign unraveling, Pareja took his own life aboard his flagship two days later, on November 28. A single small ship, seized in half an hour, had broken the will of the man commanding an empire's fleet.

The Covadonga did not return to Spanish hands. She joined the Chilean Navy and fought on, and fourteen years later she sailed into the most storied sea battle in Chilean history - the Battle of Iquique during the War of the Pacific. There, in 1879, Arturo Prat, the young officer who had served aboard the Esmeralda at Papudo, leapt onto the deck of an enemy ironclad and died, becoming Chile's defining naval hero. The threads that ran through Papudo - the ships, the men, the young officers learning their trade - would weave through the rest of the century's conflicts. Papudo itself remained a quiet coastal town, its sheltered bay better known today for summer beaches and seafood than for gunfire. But the water just offshore witnessed the moment Chile proved it could beat the old empire at sea, and meant it - a half-hour that punched well above its size in the story the nation tells about itself.