 To combat this, Sengle brought the engineer Vincenzo Vogo to Malta to upgrade the mills so that the population would not starve.The Valletta tornado probably occurred during Sengle's reign in 1555 or 1556, although some sources say that it occurred in 1551.According to some sources, four galleys named "Santa Fè", "San Michele", "San Filippo", and "San Claudio" capsized in the tornado and help arrived from abroad for the Order to acquire new galleys to replace them.