Persian Gulf rain contributions, there is still a deficit of 416 cubic kilometers per year. This difference is supplied by currents at the Strait of Hormuz. The water from the Gulf has a higher salinity, and therefore exits from the bottom of the Strait, while ocean water with less salinity flows in through the top. Another study revealed the following numbers for water exchanges for the Gulf: evaporation = -1.84m/year, precipitation = 0.08m/year, inflow from the Strait = 33.66m/year, outflow from the Strait = -32.11m/year, and the balance is 0m/year. Data from different 3D computational fluid mechanics models, typically with spatial resolution
Piracy in the Persian Gulf the British to further their agendas in the Persian Gulf. Indian historian Sugata Bose maintains that while he believes the British colonial accounts of piracy were self-serving, he disagrees with Al Qasimi's thesis that piracy was not widespread in the Persian Gulf region. Davies argues that the motives of the Al Qasimi tribe in particular may have been misunderstood and that it cannot be definitively stated that they were pirates due to issues of semantics. J.B. Kelly comments in his treatise on Britain and the Persian Gulf that the Qasimi are undeserving of their reputation as pirates, and goes on