BRAZILIAN SEAFARERS' STRIKE DAMAGES OIL EXPORTS A strike by Brazil's 40,000 seafarers who want pay rises of up to 180 pct may have cost the state-owned oil company Petrobras 20 mln dlrs in lost export orders, the company's commercial director Arthur de Carvalho was quoted as saying in press reports. More than 170 ships in Brazil, and about nine more in foreign ports, have been halted by the strike, which began on February 27. Marines began blockading the ships on Friday after the strike was ruled illegal, and some strikers are running short of food, National Merchants Marine Union president Edson Areias said.