Specifies the test method for corrosion resistance performance of marine paints in saline water and hot saline water environment. The standard includes test equipment, sample preparation, test conditions and result evaluation. Compared with the 1989 version, the new version adjusts the saline water preparation standard to natural seawater or artificial seawater, and shortens the hot saline water test period to 7 days. At the same time, the size requirements of the test sample and the artificial seawater formula are added to ensure that the test results are more in line with the actual application.