In 1768, the Bourbon Visitador
José de Gálvez decided to found the port of San Blas as a jumping off point for military expeditions to Sinaloa, Sonora, Baja California and Alta California. The military nature of San Blas distinguished it from the commercial port of Acapulco to the south. A subtext to the founding of San Blas may have been Gálvez' desire to curtail tax evasion on trade with Asia out of Acapulco, which was controlled by businessmen of Mexico City. Both Acapulco and San Blas tied New Spain to Asia through Manila. Gálvez also founded a shipyard in San Blas, with the next shipyard being Cavite in the Philippines. From 1774, navy ships delivered mail from San Blas to Manila. By tradition, the crew could carry private merchandise, so there was a small commercial subtext to San Blas from its inception In the 1790s, the Bourbon monarchy approved special permits for private ships to sail from Cadiz to San Blas. In 1801 and 1807, two ships of the
Royal Philippine Company stopped in San Blas, though they were officially permitted only to sail to Lima. It was not until crisis broke out in the Spanish Empire in 1810 that San Blas opened its ports to trade between Lima, Panama, San Blas, Guaymas, Monterey and Manila. Silver mined in Mexico's northwest was shipped out of San Blas to pay for imports of goods, particularly from Panama, which was flooded with British products that entered through Jamaica on the other side of the isthmus. At first, only two ships were assigned to the port: the
packet ship San Carlos, commanded by
Juan Pérez, and
El Principe, commanded by Vicente Vila. Gálvez ordered four new vessels to be built, one of which was the
schooner Sonora, later sailed in 1775 by
Juan Francisco de la Bodega y Quadra to Alaska. In many ways, San Blas was a poor choice for a deep sea harbor and settlement. The harbor was so small that it could never hold more than four ships at a time. Silting caused by the nearby
Río Grande de Santiago resulted in the need for the harbor to be regularly dredged. The climate's stifling humidity and torrential rains from July to October, coupled with extensive
mangrove swamps that surrounded the settlement, resulted in San Blas being plagued by clouds of voracious mosquitoes. A variety of sicknesses were endemic, including
dysentery,
typhoid fever,
malaria, and other fevers. to defend the town's sea trade with the Philippines. Its front has stone carvings of the kings of Spain. On the hill behind the fort are the ruins of the Church of Our Lady of the Rosary, built in 1769. The ruins once contained the bronze bells that are said to have inspired
Henry Wadsworth Longfellow's poem, "The Bells of San Blas". The ruins of a 19th-century customs house are on Calle Benito Juárez, three blocks from the main plaza. During the colonial period, hardwood forests provided the raw materials for ships that did a brisk trade with the
Philippines and the
Manila galleon until the shipping moved to the port at
Manzanillo, and later to
Acapulco.
Modern history In 2021,
ejidatarios (farmers) from Jolotemba and nearby communities blocked access to the luxury tourist complex "Limoncitos Hills" owned by Canadian developer Angela Birkenbach. The complaints go back to 2019, when the developer deforested virgin land, without permission. Birkenbach's latest move was to take over an access road and of virgin beach, one of the last along the Nayarit coast. ==San Blas and California==