evidence: Bahrain claims that Qit'at Jaradah comes under Bahraini sovereignty, since it has displayed its authority over it in various ways, and that this was recognized by the British Government in 1947. In this respect it has referred to a number of activities, including the erection of a beacon, the ordering of the drilling of an artesian well, the granting of an oil concession, and the licensing of fish traps. Qatar contends that Qit'at Jaradah, being a low—tide elevation, cannot be appropriated, and that, since it is situated in the part of the territorial sea which belongs to Qatar, Qatar has sovereign rights over it. The Court first notes that Qit'at Jaradah is a very small island situated within the 12–mile limit of both States. According to the report of the expert commissioned by Bahrain, at high tide its length and breadth are about 12 by 4 metres, whereas at low tide they are 600 and 75 metres. At high tide, its altitude is approximately 0.4 metres. Certain types of activities invoked by Bahrain such as the drilling of artesian wells would, taken by themselves, be considered controversial as acts performed à titre de souverain. The construction of navigational aids, on the other hand, can be legally relevant in the case of very small islands. In the present case, taking into account the size of Qit'at Jaradah, the activities carried out by Bahrain on that island must be considered sufficient to support Bahrain's claim that it has sovereignty over it.