Khor Fakkan for the Sultan of Muscat and then proceeding to Rams, Jazirah Al Hamrah, Ajman and Sharjah. Sultan bin Saqr, the legitimate ruler of Ras Al Khaimah, still being in exile, the British did not attempt to secure a treaty following the 1809 expedition. In 1813, an expedition by the Sultan of Muscat to Ras Al Khaimah with the objective of restoring Sultan bin Saqr failed. However, a further sally the next year saw Sultan once again installed as Ruler not of Ras Al Khaimah, but of Sharjah and Lingeh, the latter being his principle residence. Ras Al Khaimah remained under the effective rule of the Saudi dependent, Hassan bin Rahmah. The 1819 expedition and 1820 treaty Under Hassan, the Qawasim found themselves not only in conflict with Muscat, but increasingly with British shipping and a series of incidents led to a peace treaty being signed in 1814 which barely held. In 1819 the British embarked on a second Persian Gulf Campaign and this time sacked Ras Al Khaimah, removed Hassan bin Rahmah and then proceeded to bombard and destroy the fortifications and larger vessels of Jazirah Al Hamra, Umm Al Quwain, Ajman, Fasht, Sharjah, Abu Hail, and Dubai. Sultan signed the General Maritime Treaty of 1820 on the 4 February 1820 at Falayah Fort inland of Ras Al Khaimah as 'Sheikh of Sharjah and Ras Al Khaimah'. Hassan bin Rahmah had earlier signed the treaty as 'Sheikh of Khatt and Falaiha, formerly of Ras Al Khaimah'. Sultan moved quickly to assert his influence, removing the ageing Wahhabi Sheikh of Rams and Dhayah to Sharjah and replacing him with the son of a former Sheikh and then placing his own son Muhammad as Wali over Ras Al Khaimah. Abdulla bin Rashid of Umm Al Quwain recognised Sultan's primacy at the time. Of the Northern Emirates, only Ajman considered itself independent. By 1824, Sultan had installed a pliable client in Umm Al Quwain and obtained acknowledgement of his suzerainty from Ajman. He married into the Ruling family of Dubai in 1825. Later in 1820, Sultan built Sharjah Fort. Early British records of 1830 note the fort was located "a little inland, mounting six pieces of cannon, together with some detached towers. In case of alarm from an enemy, it is stockaded round with date trees and wood sufficient for repelling the attack of Arabs although of little service against regular