Sultan of Bandar Abbas, met the son of the ruler of Dibba. From this he learned that Dibba had formerly been subject to the kingdom of Hormuz, but was at that time loyal to the Safavids. In 1623 Safavids sent troops to Dibba, Khor Fakkan and other ports on the southeast coast of Arabia in order to prepare for a Portuguese counter-attack, following their expulsion from Hormuz (Jarun). The Portuguese, under Rui Freire, were so successful that the people of Dibba turned on their Safavid overlords putting them all to death, whereupon a Portuguese garrison of 50 men was installed at Dibba. More Portuguese forces had to be sent to Dibba in 1627 as a result of an Arab revolt. Two years later the Portuguese proposed moving part of the Mandaean population of southern Iraq to Dibba under pressure from neighbouring Arab tribes . Although Dibba was offered to the Mandaeans they were wise enough to see that the Portuguese force there would be insufficient to guarantee their security and, while a few Mandaeans tested the waters by moving to Muscat, most returned to Basra in AD 1630.
In 1645 the Portuguese still held Dibba but the Dutch, searching for potential sites for new commercial activities, sent the warship Zeemeeuw ('Seagull') to explore the Musandam peninsula between Khasab, on the Persian Gulf side, and Dibba on the east coast. Claes Speelman, the captain of the Zeemeeuw, made drawings in his logbook, including what is certainly the earliest depiction of Dibba in a European source. Within a year or two the Portuguese were forced out of Dibba and held only Khasab and Muscat, which they finally lost in 1650.
Eleven years later Jacob Vogel's description of the east coast of the Oman peninsula, prepared for the Dutch East India Company in 1666, contained the following: "Dabba (which we were unable to visit because of calm and counter currents) is a place (according to the interpreter assigned to us) with about 300 small houses constructed from branches of date
