By controlling parts of Oman, Minab, and Mūghistān, Deramku managed to create a power base on the eastern side of the Straight of Hormoz and enter into direct competition with the rulers of Kish (Qais) who were previously vassals of the Buyids of Fārs. The connection between Hormoz and Kerman is also probably paralleling the connections between Kish and Shiraz (and further Isfahan), making Hormoz an important link in Kerman’s claims to supremacy in the trade of the Persian Gulf and the Arabian Sea.