Two Coast Guard small boats set a security zone around the 900-foot container ship Cosco Busan. The ship hit the San Francisco Bay Bridge Nov. 7, 2007 spilling an estimated 58,000 gallons of oil into the bay.(U.S. City Attorney Dennis Herrera filed suit in San Francisco Superior Court, under the State's Lempert-Keene-Seastrand Oil Spill Prevention and Response Act and other state laws, against the parties responsible for the November 7 oil spill incident in the San Francisco Bay. In that incident, the M/V Cosco Busan, a 65,131-ton, 900-ft.