DUBAI, May 30 (Reuters) - Operations to salvage 1.1 million barrels of oil from a decaying tanker moored off Yemen's coast will soon begin after a technical support ship arrived on site on Tuesday, the United Nations said. U.N. officials have been warning for years that the Red Sea and Yemen's coastline was at risk as the Safer tanker could spill four times as much oil as the 1989 Exxon Valdez disaster off Alaska. The Ndeavor tanker, with a technical team from Boskalis/SMIT, is in place at the Safer tanker off the coast of Yemen's Ras Isa, the U.N. Humanitarian Coordinator in Yemen David Gressley said on Twitter from on board the Ndeavor. The war in Yemen caused suspension of maintenance operations on the Safer in 2015. Additional funding is still important to finish the process," the U.N said on its Yemen Twitter account.

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Persons: U.N, SMIT, Yemen's Ras Isa, Yemen David Gressley, Muhammad Yusuf The, Nayera Abdallah, Lisa Barrington, Bill Berkrot Organizations: United Nations, Boskalis, Twitter, REUTERS, Thomson Locations: DUBAI, Alaska, Yemen's, Yemen, Ras Issa, China, Iran, Saudi Arabia, Riyadh, Tehran