query: How many ships were involved in the Portolà expedition?
passage: Timeline of the Portolá expedition
Gálvez placed Gaspar de Portolá, recently appointed governor of Las Californias, in overall command of the expedition. Second in command was Captain Fernando Rivera y Moncada, commander of the Presidio at Loreto. Serra headed the Franciscan missionary contingent. Three ships were also assigned: two to follow the land march up the coast and keep the expedition supplied from the naval depot at La Paz (on the Baja peninsula), and another ship to connect La Paz with the mainland at San Blas.
passage: Portolà expedition
Upon hearing about the king’s desire to explore Alta California, New Spain's "visitador" (inspector general) José de Gálvez organized an exploratory expedition and placed Governor Portolá in overall command. The plan called for a joint land-sea movement up the Pacific coast. The job of the ships was to keep the land contingent supplied with provisions and to carry communications between them and New Spain. Portolá decided to travel by land.