The main procedures were established based on the recommendations of Pedro Menndez de Avils, an experienced admiral and personal adviser of King Philip II.[7] The treasure fleets sailed along two sea lanes. The main one was the Caribbean Spanish West Indies fleet or Flota de Indias, which departed in two convoys from Seville, where the Casa de Contratacin was based, bound for ports such as Veracruz, Portobelo and Cartagena before making a rendezvous at Havana in order to return together to Spain.[8] A secondary route was that of the Manila Galleons or Galen de Manila, which linked the Philippines to Acapulco in Mexico across the Pacific Ocean. From Acapulco, the Asian goods were transhipped by mule train to Veracruz to be loaded onto the Caribbean treasure fleet for shipment to Spain.[9][7] To better defend this trade, Pedro Menndez de Avils and lvaro de Bazn designed the definitive model of the galleon in the 1550s.[10]