PEARL HARBOR, Hawaii (NNS) -- The U.S. Navy announced May 9 the completion of the investigation into the Jan. 8 accident aboard the submarine USS San Francisco (SSN 711) that claimed the life of one Sailor. San Francisco struck an undersea mountain about 360 miles southeast of its Guam homeport because its leaders and watch teams failed to develop and execute a safe voyage plan, the command investigation into the incident concluded. "The findings of fact show that San Francisco, while transiting at flank (maximum) speed and submerged to 525 feet, hit a seamount that did not appear on the chart being used for navigation," the 124-page report said of the incident in the vicinity of the Caroline Islands.