According to Os Portugueses em Africa, America e Oceania, in the year 1518, Duarte Coelho visited Pahang and stated that the Sultan of Pahang agreed to pay a cup of gold as an annual tribute to Portugal. This act was thought to be a sign friendship shown by the Sultanate, but was regarded by the Portuguese as a sign submission.[33] Manuel de Faria e Sousa relates that until 1522 the Sultan of Pahang had sided with the Portuguese, but seeing that the tide of fortune had turned against them, he, too became their enemy. Ignorant of this change, de Albuquerque sent three ships to Pekan for provisions, where two of his captains and thirty men were killed.