sentences:  At the close of the 19th century, Captain Marston became the president of the Shipowners Association of San Francisco.He also served on the Board of Directors of Welsh and Co. (the "Planters Line"), a shipping company eventually acquired by Matson Lines.He was also a director of the Mercantile Trust Company, the First National Bank of Berkeley, and Boole and Sons Shipyards in Alameda, California.