GD0188 SOUTH CHINA SEA EXPLORATION BY M/V “HAI YANG SHI YOU 623” IN AREA BOUNDED BY 21-12-23.2N 115-00-54.4E，21-10-45.8N 115-05-24.0E，21-09-48.7N 115-10-37.7E，21-09-04.9N 115-19-51.6E，21-07-27.7N 115-19-42.8E，21-08-12.2N 115-10-23.5E，21-09-10.8N 115-04-59.9E AND 21-10-52.9N 115-00-17.3E FROM 15 SEP. TO 31 OCT. SIGNAL LIGHTS AND SHAPES WILL BE EXHIBITED ADVISED TO AVOID GUANGDONG MSA CHINA