subsumed by their larger neighbours and signatories were Sheikh Sultan bin Saqr of Ras Al Khaimah; Sheikh Maktoum of Dubai; Sheikh Abdulaziz of Ajman, Sheikh Abdullah bin Rashid of Umm Al Quwain and Sheikh Saeed bin Tahnoun of Abu Dhabi. The treaty only granted protection to British vessels and did not prevent coastal wars between tribes. As a result, raids continued intermittently until 1835, when the sheikhs agreed not to engage in hostilities at sea for a period of one year. The truce was renewed every year until 1853. Perpetual Maritime Truce In 1853, the Perpetual Maritime Truce of 4 May 1853 prohibited any act of aggression at sea and was signed by Abdulla bin Rashid of Umm Al Quwain; Hamed bin Rashid of Ajman; Saeed bin Butti of Dubai; Saeed bin Tahnoun ('Chief of the Beniyas') and Sultan bin Saqr ('Chief of the Joasmees'). A further engagement for the suppression of the slave trade was signed in 1856 and then in 1864, the 'Additional Article to the Maritime Truce Providing for the Protection of the Telegraph Line and Stations, Dated 1864'. An agreement regarding the treatment of absconding debtors followed in June 1879. Exclusive Agreement Signed in 1892, the 'Exclusive Agreement' bound the Rulers not to enter into 'any agreement or correspondence with any Power other than the British Government' and that without British assent, they would not 'consent to the residence within my territory of the agent of any other government' and that they would not 'cede, sell, mortgage or otherwise give for occupation any part of my territory, save to the British Government. In return, the British promised to protect the Trucial Coast from all aggression by sea and to help in case of land attack. Trucial States affairs Significantly, the treaties with the British were maritime in nature and the Trucial Rulers were free to manage their internal affairs, although they often brought the British (and their naval firepower) to bear on their frequent disputes. This was particularly the case where disputes involved indebtedness to British and Indian nationals. During the late 19th and early 20th-century a number of changes occurred to the status of various emirates, for instance emirates such as Rams and Zyah (now part of Ras Al Khaimah) were signatories to the original 1819 treaty but not recognised by the British as trucial states in their own right, while the emirate of Fujairah,