AMERICAN PRESIDENT <APS> TO LEASE MORE SHIPS American President Cos Ltd said its American President Lines shipping subsidiary obtained final approval from U.S. and Japanese authorities to lease four new ships from Lykes Bros Co. The move will will enable it to boost service in the Pacific by 15 pct in 1987, American President said. The company said it will lease the ships for three years and hold two additional three-year options. It said American President Lines is currently operating at capacity in the Pacific and the new ships will arrive in time for the normal demand surge of the spring and summer seasons.