Trade between Elmina and Portugal grew throughout the decade following the establishment of the trading post under Gomes. In 1481, the recently crowned João II decided to build a fort on the coast in order to ensure the protection of this trade, which was once again held as a royal monopoly. King João sent all of the materials needed to build the fort on ten caravels and two transport ships. The supplies, which included everything from heavy foundation stones to roof tiles, were sent, in pre-fitted form, along with provisions for six hundred men. Under the command of Diogo de Azambuja, the fleet set sail on 12 December 1481 and arrived at Elmina, in a village called Of Two Parts a little over a month later, on 19 January 1482. Some historians note that Christopher Columbus was among those to make the voyage to the Gold Coast with this fleet.