 When Alessandro Malaspina visited in 1791, he found San Blas's climate so unhealthy that he refused to stay there, instead transferring his operations and some of San Blas' ships and personnel to Acapulco.San Blas's location was useful and logical, however, because it minimized travel time from Guadalajara and Mexico City without increasing the total distance to the Californias.Also, the area around San Blas had a plentiful supply of hardwoods useful for ship building and repair.