GD113/25, SOUTH CHINA SEA, 13 JUN M/V AAL DAMMAN SAIL FROM 22-42.2N 113-39.1E FOR SEA TRIAL. 13 TO 27 JUN SEA TRIAL WORK IN AREA BOUNDED BY 21-38.6N 113-36.6E,21-59.3N 114-22.7E, 21-40.3N 114-28.8E AND 21-16.9N 113-36.8E . CAUTION ADVISED. GUANGDONG MSA CHINA.