DUBAI - The board of National Shipping Company of Saudi Arabia (Bahri) has proposed to more than double its annual cash dividend for 2015 to 2.5 riyals ($0.67) per share, according to a bourse statement on Thursday. The board had suggested a 1 riyal per share dividend for the year, plus an additional 1.5 riyals per share payout, the filing said. The company, the official oil shipper for Saudi Aramco, paid 1 riyal per share in 2014, according to Thomson Reuters data. ($1 = 3.7523 riyals) (Reporting by Hadeel Al Sayegh; Editing by David French)