Sea-Going "Train" Starts 7500-Mile Voyage -- Heading for the Golden Gate here yesterday to begin a 7,500-mile voyage across the Pacific to China, is the sea-going tug LT-215, with 3 oil barges in Tandem tow. Each barge carries another pickaback. The barges were destined for use by the Chinese government in getting their tung oil export trade under way. In background, San Francisco, bay bridge, Yerba Buena Island, and Treasure Island, at extreme left. June 03, 1946. (Photo by AP Wirephoto).