The San Jose galleon

Lore & Background

Commissioned by the Spanish Crown and built in the Basque Country, the *San José* was a 64-gun galleon launched in 1698. Designed by Francisco Antonio Garrote and constructed at the Mapil shipyard in Usurbil, Gipuzkoa, she was built alongside a twin vessel, the *San Joaquín*, in a simultaneous project for the Spanish Navy. As a flagship of the Spanish treasure fleet during the War of the Spanish Succession, she served under General José Fernández de Santillán, the Count of Casa Alegre. On her final voyage, she led a fleet of three Spanish warships and 14 merchant vessels from Portobelo, Panama, to Cartagena, Colombia, carrying gold, silver, emeralds, and jewelry from the Viceroyalty of Peru, including metals mined at Potosí in present-day Bolivia. During a battle with a British squadron near Barú Island on 8 June 1708, her powder magazines detonated, destroying the ship and killing nearly all of her approximately 600 Spanish sailors and officers; only 11 survived. The wreck rests at a depth of 600 meters, discovered in November 2015 by the Colombian Navy using a REMUS 6000 autonomous underwater vehicle. Marine archaeologists identified the vessel by her bronze guns, cast in Spain with distinctive dolphin motifs. The site is considered both a significant underwater cultural heritage location and a war grave of the Spanish state, with the cargo valued at an estimated US$17 billion as of 2023.

Reader's Guide

The San José was a 64-gun Spanish galleon built in the Basque Country and launched in 1698. It served as the flagship of the Spanish treasure fleet during the War of the Spanish Succession. On 8 June 1708, while sailing from Portobelo, Panama, to Cartagena, Colombia, the fleet encountered a British squadron near Barú Island. During the ensuing battle, known as Wager’s Action, the San José’s powder magazines detonated, destroying the vessel and killing nearly all of its approximately 600 Spanish sailors and officers. Only 11 crew members survived. The wreck, lying at a depth of 600 metres, was located in November 2015 by the Colombian Navy using an autonomous underwater vehicle. Its cargo of gold, silver, and emeralds—mined largely at Potosí in present-day Bolivia—is estimated to be worth about US$17 billion as of 2023. The site is considered a war grave of the Spanish state and a significant underwater cultural heritage site. The discovery sparked an international ownership dispute: Spain asserts sovereign rights over the vessel as a commissioned warship, while Colombia claims it as submerged national patrimony. Colombia has not ratified the United Nations Convention on the Law of the Sea or the UNESCO Convention on the Protection of the Underwater Cultural Heritage, both of which support sovereign immunity for sunken state vessels. Additional claims come from the salvage company Sea Search Armada and indigenous groups from Bolivia. Since July 2017, a joint scientific operation led by Colombian authorities has been exploring the site and retrieving its contents for a future museum in Cartagena.

Did You Know?

• San José was built as a twin ship alongside San Joaquín at the same shipyard in the Basque Country.

Common Misconceptions (Editorial)

A common misconception is that the San José was a treasure ship sailing alone or as part of a small convoy. In fact, it was the flagship of a fleet composed of three Spanish warships and 14 merchant vessels. Another misconception is that the ship was simply lost at sea; in reality, it was destroyed in battle when its powder magazines detonated.

Why It Matters (Editorial)

The San José endures as a symbol of the immense riches and risks of Spain’s colonial empire, representing both the wealth extracted from the Americas and the violent struggle to control it. Its destruction in battle, with a cargo intended for the Spanish king, also raises enduring questions about sovereignty, heritage, and the ethics of recovering sunken treasure from a war grave.