State and federal officials are launching a mission this week to see how much oil remains in the hold of a ship that sank in World War II and has been sitting off California's central coast.The SS Montebello was hit by a torpedo from a Japanese submarine in December 1941 carrying more than 3 million gallons of oil and now sits six miles off the coast of Cambria. If the oil is still in the ship officials fear it could leak resulting in an environmental disaster that could eclipse the 1969 Santa Barbara oil spill.Divers and a remote controlled vehicle will assess the situation and take oil samples from the ship which will be analyzed by scientists to determine how to best deal with the situation.