LONDON (Reuters) - Coalition naval forces are helping to guard vital oil
                           installations in top exporter Saudi Arabia as part of heightened security following an al Qaeda threat last month, naval sources
                           said on Friday.
                           In their sights are the kingdom's Ras Tanura terminal, the world's biggest
                           offshore oil export facility, and Bahrain's Bapco refinery.
                           "Acting on information received, Coalition naval forces, operating in support
                           of Saudi and Bahraini forces have deployed units to counter a possible maritime threat to the oil facilities at Ras Tanura,"
                           Britain's Royal Navy in Dubai said in a statement.
                           Saudi Arabia's own security forces and navy are guarding strategic oil facilities
                           and coalition forces are patrolling only in international waters.
                           "Coalition forces are taking the prudent, precautionary measures and focusing
                           on maritime security operations in the Gulf on these possible threats," said Kevin Aandahl, spokesman for the U.S. Naval Forces
                           Central Command in Bahrain.
                           "We're constantly and routinely conducting maritime security operations
                           in the Gulf and international waters and these operations deny terrorists the use of the maritime environment as a venue for
                           attack."
                           A Saudi security adviser also said any operations in the Gulf were entirely
                           routine and added there had been no further threat since al Qaeda on September 11 said it would target economic interests
                           in the Gulf.
                           "This is part of the on-going exercises between the U.S., British, Bahraini
                           and Kuwaiti forces... in the Gulf," said Nawaf Obaid.
                           Oil prices initially rose about 30 cents to around $61 as traders recalled
                           a foiled attack in February on Saudi Arabia's huge Abqaiq facility, the world's biggest oil processing plant.
                           Crude oil shipments were continuing as normal from the kingdom's main east
                           coast terminal, industry sources said.
                           Riyadh is exporting around 7 million barrels per day (bpd) of oil to world
                           markets, with Ras Tanura handling most of it. The terminal has the capacity to export 6 million bpd.
                           It was unclear how much oil the terminal was exporting on Friday and national
                           oil company Saudi Aramco declined to make any comment.
                           In an interview with Reuters in July, Vice Admiral Patrick M. Walsh, who
                           is in charge of U.S. Naval Forces Central Command, said he was concerned that al Qaeda might attack oil facilities from the
                           sea.
                           He said the unsuccessful attack on the Abqaiq oil facility in February had
                           made him especially wary.
                           "When I look at that, my first reaction is that they (al Qaeda) are going
                           to turn to the sea. I recognize that when they are thwarted in one direction they turn to another."
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